Answer:
idk
Step-by-step explanation:
MULTIPLE CHOICE:
What is the discriminant of the quadratic equation 2x^2+8x−5=0
A. 104
B. -24
C. -104
D. 24
Answer:
104
Step-by-step explanation:
2x^2+8x−5=0
This is written in the form
ax^2 + bx+c
a =2 b = 8 c=-5
The discriminant is
b^2 -4ac
8^2 - 4(2)(-5)
64 + 40
104
The discriminant is 104
Are extraneous solution always negative numbers
Answer: i would say no there not always negative
Answer:
Step-by-step explanation:
The function C(t) = 100. e-0.0001212 describes how to find the percentage of
carbon-14, c(t), remaining in an object after tyears.
According to this information, what was the percentage of carbon-14
remaining in an object after 55 years? (Round your answer to the nearest
hundredth.)
O A. 0.94
O B. 99.34
O C. 93.56
O D. 0.99
Answer:
D
Step-by-step explanation:
A coin is tossed then a letter from the word incredible is chosen at random. What is the probability of getting heads, then a vowel?
Answer:
https://brainly.com/question/14691406
Step-by-step explanation:
Please find the VOLUME of this figure... Write the formula and plug in the values... Write your answer with units and box your answer
ALSO
What is this shape called
Answer:
hope this is correct
Oliver removed 56 marbles from his marble
box and put them into 8 equal groups. How
many marbles were in each group?
Which expression converts 100 inches per minute to feet per minute?
100 inches
1 minute
100 inches
1 minute
60 minutes
1 hour
1 hour
60 minutes
100 inches
1 minute
1 foot
12 inches
12 inches
1 foot
100 inches
1 minute
Answer:
It's not listed precisely, but basically, it would be 1 foot / 12 inches
Step-by-step explanation:
complete the table for 15 points.
Answers:
20%, 0.2
1/4, 0.25
50%, 0.5
2/3
Answer:
Step-by-step explanation:
Fraction: 1/4 since 25% is 25% of 100%
Fraction: 1/3
Percentage: 1/5 = 0.2 = 20%
Percentage: 1/2 = 0.5 = 50%
Decimal: 20% = 0.2
Decimal: 25% = 0.25
Decimal: 50% = 0.5
Find the area of this trapezoid... Round to the nearest tenth and in include units in your answer
Answer:
[tex]89.7in^2[/tex]
Step-by-step explanation:
[tex]A=\frac{a+b}{2} h\\=\frac{10.5*19.4}{2}*6\\ =89.7in^2[/tex]
Which could be the function graphed below?
Answer:
Probably A, or 1
Step-by-step explanation:
You see, a square root function actually looks like a sideways parabola, just missing one side because of the domain of a square root. Now, the reason I can tell them apart is because our vertex is below the y-axis, and the only equation that has a negative y-intercept is the first one, or A.
Hope this helps!
Concrete is made by mixing cement, sand, and
gravel in the ratio 5:9:13. How much cement
is nceded to make 324 ft of concrete?
Answer:
60
Step-by-step explanation:
Sum the parts of the ratio, 5 + 9 + 13 = 27 parts
Divide the amount of concrete by 27 to find the value of one part of the ratio.
324 ÷ 27 = 12 ← value of 1 part of the ratio , thus
5 parts = 5 × 12 = 60 ← cement
9 parts = 9 × 12 = 108 ← sand
13 parts = 13 × 12 = 156 ← gravel
To make 324 ft of concrete, we would need 60 ft of cement.
We have,
Given the ratio of cement, sand, and gravel as 5:9:13, we can consider the total number of parts in the mixture as 5 + 9 + 13 = 27 parts.
Now,
27 parts = 324 ft
Divide both sides with 27.
1 part = 324/27 ft
1 part = 12 ft
Now,
1 part = 12 ft
Multiply 5 on both sides.
5 parts = 5 x 12 ft
5 parts = 60 ft
Therefore,
To make 324 ft of concrete, we would need 60 ft of cement.
Learn more about ratios here:
https://brainly.com/question/2462048
#SPJ4
Abigail has $30.00 to buy groceries.she needs to buy some apples,some bananas, and 3 pounds of potatoes.Fuji apples are $1.79 a pound ,bananas are$0.36 each, and potatoes are 2.99 for a 3 lb bag. If a represents the number of pounds of apples Abigail buys b represents the number of bananas she buys,which expression represents the amount of change she receives after her purchases?
Answer:
An expression represents the amount of change she receives after her purchases is y=-1.79a-0.36b+27.01
Step-by-step explanation:
Let a represents the number of pounds of apples
Let b represents the number of bananas
Cost of 1 pound apple = $1.79
So, Cost of a pounds apples = 1.79 a
Cost of 1 banana = $0.36
Cost of b bananas = 0.36b
Cost of 3 lb bag of potato i.e. 3 pounds of potato = $2.99
So, Total cost = 1.79a+0.36b+2.99
Abigail has $30.00 to buy groceries
Let y be the change received by her
So, Change received by her:
y = 30-( 1.79a+0.36b+2.99)
y= 30-1.79a-0.36b-2.99
y=-1.79a-0.36b+27.01
Hence expression represents the amount of change she receives after her purchases is y=-1.79a-0.36b+27.01
Simplify the expression.
[tex]\frac{10}{\sqrt{2}+\sqrt{7} }[/tex]
Answer:
Step-by-step explanation:
[tex]\frac{10}{\sqrt{2}+\sqrt{7}}=\frac{10*(\sqrt{2}-\sqrt{7})}{(\sqrt{2}+\sqrt{7})*(\sqrt{2}-\sqrt{7})}\\\\=\frac{10*(\sqrt{2}-\sqrt{7})}{(\sqrt{2})^{2}-(\sqrt{7})^{2}}\\\\=\frac{10*(\sqrt{2}-\sqrt{7})}{2-7}\\\\=\frac{10*(\sqrt{2}-\sqrt{7})}{-5}\\\\=-2*(\sqrt{2}-\sqrt{7})\\\\= -2\sqrt{2}+2\sqrt{7}[/tex]
Hint: (a + b)(a -b)= a² - b²
(√2+√7)(√2-√7)=(√2)²-(√7²) = 2 - 7 = -5
Lines a and b are horizontal and parallel to each other. Line a contains points L and M and line b contains points O and N. Line c is diagonal and intersects line a at point X and line b and point Z. It also contains points H and G. Line d is diagonal and intersects line a at point X and line b at point Y. It also contains points J and K. Triangle X Y Z is created by the lines.
Which represents an exterior angle of triangle XYZ?
∠LXZ
∠JXM
∠JXZ
∠HXJ
picture below.
Answer:
jxz
Step-by-step explanation:
just did the question on edge
Answer:
jxz
Step-by-step explanation:
Laura wants to enlarge a picture she took at the beach to hang on her wall. The picture is 3 inches tall and 5 inches wide. If she wants the enlarged picture to be 2 feet wide, how tall will it need to be?
Answer:
I think the answer will be 14.4 inches tall.
Step-by-step explanation:
What type of study would you conduct if you wanted to know how many
miles a week on average students on the school's cross country team run
during the summer? Explain your reasoning. *
Your answer
Find the area of the shaded segment of the circle.
Solve #10 asap please.
Answer:
x=1
Step-by-step explanation:
1. add 7/3x and 1/3x
2. subtract 5/3x because its the lowest number with a variable and you'll get 3/3x = 1
3. divide 3/3 from both sides (3/3) equals 1, so its 1/1 which is 1
4. x=1
Tina is organizing a contest for her friends. The winner of the contest can pick two movie tickets out of a bag without looking. The bag contains movie tickets to Cinema 16 and movie tickets to Cinema 25. There are five more Cinema 25 tickets than Cinema 16 tickets. Write and simplify an expression that represents the probability that the winner will pick two Cinema 16 tickets. What is the probability that the winner picks two Cinema 16 tickets if there are 8 Cinema 16 tickets in the bag before her first pick? Round your answer to the nearest hundredth.
Answer:
3.400
Step-by-step explanation:
Cinema 25 Cinema 16
5+
2+ 5 =7
the people mostly pick Cinema 25
7/2 = 3.5
Answer: 3.40 x 10
PLEASE HELP ME QUICK EXPLANATION AND ANSWERS PLEASE IF ANY NONSENSE ANSWED YOU WILL BE REPORTED
Answer:
1. 1:4
2. 4:1
3. 3:5
4. 2:3
5. 1:3
6. 1:10
7. 1:2
8. 3:2
Kevin is buying water for his camping trip. He knows he needs at least 20 gallons of water for the trip. He already has five and a half gallons. The water comes in 32-fluid ounce (quarter-gallon) containers. Which algebraic inequality represents this situation? One-fourth x + 5 and one-half greater-than-or-equal-to 20 One-fourth x + 5 and one-half less-than-or-equal-to 20 One-fourth x + 5 and one-half greater-than 20 One-fourth x minus 5 and one-half greater-than 20
Answer:
Kevin is buying water for his camping trip. He knows he needs at least 20 gallons of water for the trip. He already has five and a half gallons. The water comes in 32-fluid ounce (quarter-gallon) containers.
Which algebraic inequality represents this situation?
(correct) One-fourth x + 5 and one-half greater-than-or-equal-to 20
One-fourth x + 5 and one-half less-than-or-equal-to 20
One-fourth x + 5 and one-half greater-than 20
One-fourth x minus 5 and one-half greater-than 20
Step-by-step explanation:
The first one is correct.
Answer:
it's A :P
One-fourth x + 5 and one-half greater-than-or-equal-to 20
Step-by-step explanation:
Simplify this algebraic expression completely.
10y - 3(+ 5)
A. 7y + 5
B. 7y + 2
C. 7y - 5
D. 7y - 15
A bowl contains 11 white stones and 3 black stones. One stone is chosen and not replaced, then another stone is chosen. What is the probability that the first is a white stone and the second is a black stone?
Answer:
11/ 14 chance that you will pick a white stone
3/14 chance to picka a black stone
Step-by-step explanation:
Hope that helps
Answer:
Step-by-step explanation:
[tex]P=\frac{11}{14} \times \frac{3}{13} =\frac{33}{182 }[/tex]
Part A: What is the value of 2x if 4x + 6 = 2x – 12?
Part B: What is the value of x – 3 if 24 = 6x – 18?
Answer:
Step-by-step explanation:
A) 4x + 6 = 2x - 12
Subtract 6 from both sides
4x + 6 - 6 = 2x - 12 -6
4x = 2x - 18
Subtract 2x form both sides
4x - 2x = 2x - 18 - 2x
2x = -18
B) 24 = 6x - 18
6x - 18 = 24
6x - 6*3 = 24
6(x - 3) = 24
Divide both sides by 6
[tex]\frac{6(x - 3)}{6}=\frac{24}{6}\\\\[/tex]
x - 3 = 4
which choices are equivalent to the expression above?
5 square root of 3
Answer:
Hai
5√3 is can equal to √75
because when i take 5 in root, i have to multiply by itself and 3.
5√3 is can equal to √15.√5
because its already equal to √75
5√3 is can equal to √25.√3
because its equal to √75
the other options are wrong.
good luck(:
what is the value of x?
A.39
B.41
C.26
D.17
Answer:
The answer is B.
Step-by-step explanation:
You have to use Pythogorean Theorem, c² = a² + b² where c is the hypotenuse and a,b is the side lengths :
[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]
Let a = 40,
Let b = 9,
[tex] {c}^{2} = {40}^{2} + {9}^{2} [/tex]
[tex] {c}^{2} = 1600 + 81[/tex]
[tex] {c}^{2} = 1681[/tex]
[tex]c = \sqrt{1681} [/tex]
[tex]c = 41 \: units[/tex]
*Take note, hypotenuse will always be the longest length among the 3 lengths.
*Pythogorean Theorem can only applied in a right-angle triangle.
josh earned 15% extra points on his 40 point assignment, how many total points did he earn?
find the value of
a) 8^1/3
b) 8^2/3
c) 16^3/4
Step-by-step explanation:
a. 8^1/3
=2^3*1/3
=2 Answer.
b. 8^2/3
=2^3*2/3
=2^2
=4 ans
c. 16^3/4
= 2^4*3/4
= 2^3
= 8 ans
Dr. Stein bought 30 notebooks, 60 pencils and 300 erasers for his class to make identical packages with some notebooks, some pencils and some erasers for his students. He used everything he bought, and every student got a package. What is the largest number of students Dr. Stein can have in his class?
The key word is "identical." If all students received identical packages, then Dr. Stein could have handed out 30 packages. He has a maximum of 30 notebooks to hand out, so if each package has one notebook, he can hand out 30 packages. Each of those 30 packages will also have 2 pencils and 10 erasers.
ANSWER: There are 30 packages maximum so he can have a maximum of 30 students.
Hope this helps! :)
Please give me brainly
Thankyou!
Work out the size of angle x
Solution,
x°=105°( being corresponding angles)
Hope it helps
Good luck on your assignment
Answer:
Step-by-step explanation:
x=105 degrees corresponding angles are equal
