Answer:15-2x=-45
15-2=13
13=-45
Step-by-step explanation:
I hope that helps you!
Answer:
x = 30
Step-by-step explanation:
15 - 2x = -45
+ 2x to both sides
15 = 2x - 45
+ 45 to both sides
60 = 2x
divide both sides by two
x = 30
plsss hellpppppppp ill give brainliest
Five friends take a maths test
Adam, Brandon, Chen together together scored 200 marks
Brandon, Chen and Damion together scored 215
Chen, Damion, Erica together scored 224
Damion and Erica scored more than Chen
The five of them together scored 350 marks
What are their individual scores
Answer:
[tex]Adam = 60[/tex]
[tex]Brandon = 66[/tex]
[tex]Chen = 74[/tex]
[tex]Damion = 75[/tex]
[tex]Erica = 75[/tex]
Step-by-step explanation:
Given
Represent each friend with the first letter of their name
So:
[tex]A + B + C =200[/tex]
[tex]B + C + D = 215[/tex]
[tex]C + D +E= 224[/tex]
[tex]A + B + C + D + E = 350[/tex]
[tex]D , E > C[/tex]
Substitute: [tex]A + B + C =200[/tex] in [tex]A + B + C + D + E = 350[/tex]
[tex]200 + D + E = 350[/tex]
Collect like terms
[tex]D + E = 350-200[/tex]
[tex]D + E = 150[/tex]
Make D + E the subject in [tex]C + D +E= 224[/tex]
[tex]D + E = 224 - C[/tex]
Substitute [tex]D + E = 224 - C[/tex] in [tex]D + E = 150[/tex]
[tex]224 - C = 150[/tex]
Collect like terms
[tex]C = 224 - 150[/tex]
[tex]C = 74[/tex]
Substitute [tex]C = 74[/tex] in [tex]A + B + C =200[/tex] and [tex]B + C + D = 215[/tex]
[tex]A + B + 74 = 200[/tex]
[tex]A + B =- 74 + 200[/tex]
[tex]A + B =126[/tex]
[tex]B + 74 + D = 215[/tex]
[tex]B + D = -74 + 215[/tex]
[tex]B + D = 141[/tex]
So, we have:
[tex]A + B =126[/tex]
[tex]B + D = 141[/tex]
[tex]D + E = 150[/tex]
We have: [tex]D , E > C[/tex]
i.e.
[tex]D , E > 74[/tex] and [tex]D + E = 150[/tex]
For [tex]D , E > 74[/tex] and [tex]D + E = 150[/tex] to be true,
[tex]D = E = 75[/tex]
i.e.
[tex]75 + 75 = 150[/tex]
So, we have:
[tex]D = 75[/tex]
[tex]E = 75[/tex]
Solve for B
[tex]B + D = 141[/tex]
[tex]B + 75 = 141[/tex]
[tex]B = 141 - 75[/tex]
[tex]B = 66[/tex]
Solve for A
[tex]A + B =126[/tex]
[tex]A + 66 = 126[/tex]
[tex]A = 126 - 66[/tex]
[tex]A = 60[/tex]
What is the solution to the equation √8x = √4+2x?
Answer and Step-by-step explanation:
The first step in solving for x is to square both sides.
8x = 4 + 2x
Now, subtract 2x from both sides.
6x = 4
Now, divide each side by 6.
x = [tex]\frac{4}{6} = \frac{2}{3}[/tex]
x = [tex]\frac{2}3}[/tex] is the answer.
#teamtrees #PAW (Plant And Water)
Which phrase describes the expression 505n ?
Answer:
I believe it would be "505 times n"
Step-by-step explanation:
If tis is not what you are looking for I am sorry, but the question was vague.
If you answer this question correctly i'll give brainliest
Answer:
15 inches
Step-by-step explanation:
Volume = lwh
150 = (5)w(2)
150 = 10w
w = 15
Answer:
15=w
it would be choice 3/choice yellow
Step-by-step explanation:
V=lxhxw
we have everything except for the width!
150=5x2xw
150=10xw
divide both sides by 10
15=w
it would be choice 3/choice yellow
Bob can mow 3 lawns in 5 hours. How long would it take it to mow 9 lawns?
A. 15 hours
B. 17 hours
C. 7 hours
D. 11 hours
Answer:
15 hours
Step-by-step explanation:
9 lawns is 3 times as much as 3 lawns
it will take 3 times as long
3 * 5 hours = 15 hours
The perimeter of the figure below is 32.6 m. Find the length of the missing side.
Answer:
They are all equal at the sides so , the answer is 4.8m , I think the perimeter is given just to confuse you.....
A bank is offering 3.5% simple interest on a savings account. If you earned $525 in interest
in 2 years, how much did you deposit in the savings?
O $7,500
O $8,000
O $7.250
$7.000
Answer:
$7500
Step-by-step explanation:
Given
[tex]I = 525[/tex]
[tex]R = 3.5\%[/tex]
[tex]T =2[/tex]
Required
The Principal
This is calculated using:
[tex]I =PRT[/tex]
Make P the subject
[tex]P = \frac{I}{RT}[/tex]
So, we have:
[tex]P = \frac{525}{3.5\% * 2}[/tex]
[tex]P = \frac{525}{7.0\%}[/tex]
[tex]P = 7500[/tex]
What is the approximate area of a circle with a radius of 3ft? *
28.26 ft sq
18.84 ft sq
113.04 ft sq
7.065 ft sq
Kiki has 1/6 pound of blueberries and 5/8 pound of raspberries.
What is the most accurate estimate for the difference between the pounds of berries?
Drag and drop an answer into each box to correctly complete the statements.
1/6 is closest to _____, and 5/8 is closest to_____. So the difference is closest ____.
0
1/2
1
Answer: Did this all by myself 1/6 is closer to 0 and 5/8 is closer to 1/2 so the answer is 1/2 0 then 1/2 then 1/3 again
Step-by-step explanation:
1/ 6 -5 /8 =(1 × 4 6 × 4) – (5 × 3 8 × 3) = 4 /24 – 15 /24 = 4 – 15 24 = – 11 24
please help! find the value of x
Answer:
Step-by-step explanation:
so x*18 = 9*3 ( this is a formula for segments inscribed in a circle)
18x = 27
x = 27/18
x = 1.5
Three numbers are in the ratio 5 :3 : 2. If the sum of their squares is 5472, find the three numbers
Answer:
60 36 24
Step-by-step explanation:
5 3 2
25x +9x + 4x = 5472
38x = 5472
x = 144
25(144) = 3,600 9(144) = 1,296 4(144) = 576
60² = 3,600 36²= 1,296 24² = 576
3,600 + 1,296+576 = 5,472
i need to slove −7x ^2 +x+9=−6x
Answer:
1. if you are solving using the quadratic formula. the answer is in the first picture.
2. if you are looking to completing the square the answer is in the second picture.
Step-by-step explanation:
De un saco de frutas que contiene 3 naranjas, 2 manzanas, y 3 plátanos, una muestra aleatoria de 2 piezas de se selecciona la fruta. Si X es el número de naranjas e Y es el número de manzanas en la muestra, encuentre
(a) la distribución de probabilidad conjunta de X y Y, muestre la tabla de distribución;
(b) Pruebe que la suma de columnas y renglones nos entregan las distribuciones marginales de X , Y
(c) Calcule P(Y = 0|X = 2)
(d) Demuestre que las variables aleatorias X ,Y no son estadísticamente independientes
Answer:
ok
Step-by-step explanation:
i phone you have a great day but I don't think it will be a good pic of your face is it a good day today and tomorrow to drink seculari sec to
KHAN ACCADEMY HELP I NEED
whats the question???????
Estimate: 2 3/5 - 1 3/8
Answer:
Answer:
Solution given:
[tex] 2\frac{3}{5}-1 \frac{3}{8}[/tex]
[tex]\frac{2*5+3}{5}-\frac{1*8+3}{8}[/tex]
[tex]\frac{13}{5}-\frac{11}{8}[/tex]
taking LCM
[tex]\frac{13*8-11*5}{5*8}[/tex]
[tex]\frac{49}{40}[/tex]
1[tex]\frac{9}{40}[/tex]
is a required answer.
Emily works 8 hours and made $80. How much does she make if she works 30 hours? *
Answer:
$300
Step-by-step explanation:
hourly rate
80 / 8 = $10/hr
Working 30 hrs
30 * 10 = $300
Answer: She would make $300
Step-by-step explanation: If Emily worked 8 hours and received $80, that means she's being paid $10 an hour. Just multiply 30 x 10 and you'll get 300 :)
The U.S. federal government conducts a survey of high school seniors concerning their plans for future education and employment. One question asks whether they are planning to attend a four-year college or university in the following year. Fifty percent answer yes to this question; that fifty percent is a: Question 2 options: parameter statistic variable data
Answer:
statistic
Step-by-step explanation:
Add 78, 139, and 14, and then divide by 44.
A numerical expression for the calculation is...?
Pls help mee!
Answer:
5.24, 21/4, or 5 and 1/4
Step-by-step explanation:
78+139+14 = 231
231/44 = 5.25
Or 21/4 (improper fraction)
Or 5 and 1/4 (mixed number)
I'm not exactly sure what you were asking I hope that helps!
please help me!
pls?
Answer:
19-12=7
hope this will help
Which expressions are equivalent to the one below? Check all that apply.
log(107)
A. 7.log 10
B. 1
O C. 7
D. 7. 10
Hundred Metal Spheres with a radius of 4cm each are melted. The melted solution is filled into a cube with a base area of 16cm x 10cm. Find the height of the cube filled with solution.
Answer:
Height = 167.47 cm
Step-by-step explanation:
volume of one sphere = 4/3πr³ = 4/3(3.14)(4³) = 267.9467 cm³
267.9467 cm³ x 100 spheres = 26794.67 cm³
volume of cube = L x W x H
26794.67 = 16 x 10 x H
H = 167.47 cm
A group of cat owners was asked about the number of cats each owns. The results are shown in the frequency table. Number of Frequency cats 1 2 2 3 3 3 1 4 4 Which dot plot correctly shows the data? Cats Owned O A. 3 Number of cats Cats Owned B. 2 3 Number of cats Cats Owned 2 Number of cats Cats Owned
Answer:
Cats Owned B. 2 3
Hope I helped! :)
[tex](w + \frac{4}{w} ) {}^{2} [/tex]
A rectangular barn door needs to be painted. The door is 81 inches high and
50 inches wide. What is the area of the front of the door?
А
8,100 square inches
B
1,620 square inches
524 square inches
D 4,050 square inches
Work out cube root of 512 : reciprocal of 0.4. Give your answer in the form n : 1
Step-by-step explanation:
Thanks, so cube root of 512 is 8 and reciprocal of 0.4 is 2.5 then:
8 : 2.5 / divide both by 2.5 to get:
3.2 : 1 that's my answer right?
The correct form of the ratio of cube root of 512: reciprocal of 0.4 is 3.2:1
What is a cube root?
It is a number y such that y to the power 3 is equal to x.
How to find ratio?
We have to find the ratio of cube root of 512 and the reciprocal of 0.4 which will be as follows
cube root of 512: reciprocal of 0.4
8: 1/0.4
8=2.5
dividing by 2.5
3.2 : 1
Hence the ratio will be 3.2 :1 of cube root of 512 and the reciprocal of 0.4
Learn more about cube root at https://brainly.com/question/310302
#SPJ2
Find the area of each figure. Round to the nearest tenth. Use 3.14 or 22/7 for pi.
a. 22 yd
b. 44 yd
c. 154 yd
d. 616 yd
Answer:
c. 154 yd²
Step-by-step explanation:
Given
Diameter (d) = 14 yd
radius (r) = 14/2 = 7 yd
Area of the circle
= π r²
= 22 /7 * 7 * 7
= 154 yd²
The sum of two numbers is 27. The larger of the two numbers is 7 less than triple the smaller number. Indicate the two numbers below.
Answer: 69
Step-by-step explanation: EZ
100 points
(algebra one)
describe and correct the error in comparing the graphs
actually answer this please!!
9514 1404 393
Answer:
The description of the translation direction should be "up", not "down."
Step-by-step explanation:
The blue graph of y = x²+3 is above the graph of the parent function y = x². That is, it is a copy of y = x² that has been moved (translated) up.
The correct description is ...
The graph of y=x²+3 is a translation 3 units up of the graph y=x².
What is 8% of 200?
4
16
25
Done
Answer:
16
Step-by-step explanation:
8% of 200 is 16
Answer: 16
Explanation: That's an i-Ready Diagnostic!! Heh...
e If M P = Rs 420,SP. 405 then
find discount
Answer:
discount=MP-SP
=Rs420-Rs405
=Rs15
Step-by-step explanation:
