pls help asap 50 pts right answer FOR SURE
When the sun is 45 degrees above the horizon and a tree's shadow is 10ft long, how tall is the tree? *
5ft
7ft
10ft
15ft

Answer:

60

Step-by-step explanation:

60 divided by 2 equals 30 + 9

Answer:

750% as a decimal is 7.5

Answer:

The rule is: y = -10x+85

Step-by-step explanation:

The rule is given by:

[tex]y = mx+b[/tex]

Here m is the gradient and b is the y-intercept.

We have to take two pairs of input-output to find the rule

Let the two pairs be:

(x1,y1) = (1,75)

(x2,y2) = (2,65)

Slope is found using the formula:

[tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]

Putting the values

[tex]m = \frac{65-75}{2-1}\\m = -10[/tex]

Putting the value of slope

[tex]y = -10x+b[/tex]

Putting a pair of input-output in the equation (1,75)

[tex]75 = -10(1) +b\\75 = -10+b\\b = 75+10\\b = 85[/tex]

Putting the value of b

[tex]y = -10x+85[/tex]

Hence,

The rule is: y = -10x+85

Answer:

172.5

Step-by-step explanation:

its 172.5 because 345÷2 equals 172.5 therefore she had 172.5 dollars in her savings

Answer:

0.5

C

Step-by-step explanation:

Reduce the expression, if possible, by cancelling the common factors.

Answer:

What do you need help with?

Step-by-step explanation:

Answer:

X/4 - 11

Step-by-step explanation:

Quotient is the answer of a division problem so x divided by 4 minus 11 is the equation.

Hope this helps. Pls give brainliest.

Step-by-step explanation:

1.(4,9) & (1,6)

m=y²-y¹/x²-x¹

m=6-9/1-4

m=-3/-3

m= 1

2.(5,3) & (5,-9)

m=y²-y¹/x²-x¹

m=(-9)-3/5-5

m=-12/0

3.(2,1) & (8,9)

m=y²-y¹/x²-x¹

m=9-1/8-2

m=8/6

m= 4/3

4.(14,-8) & (7,-6)

m=y²-y¹/x²-x¹

m=(-6)-(-8)/7-14

m=2/-7

m= -2/7

5.(4,-3) & (8,-3)

m=y²-y¹/x²-x¹

m=(-3)-(-3)/8-4

m=0/4

m=0

6.(-11,1) & (-2,6)

m=y²-y¹/x²-x¹

m=6-1/(-2)-(-11)

m=5/9

Answer:

last one

Step-by-step explanation:

Answer:

Step-by-step explanation:

D

Answer:

Margin of error = E = 40

Step-by-step explanation:

Assuming 99% confidence level

Given that x = 253.9  

s.d = 63.6

n = 18

Degrees of freedom = df = n - 1 = 18 - 1 = 17

At 99% confidence level the t is, α = 1 - 99% = 1 - 0.99 = 0.01

α/2 = 0.01 / 2 = 0.005

t α/2,df = t,0.005 = = 2.680 (using student t table)

Margin of error = E = t α/2,df * (s.d/√n)

Margin of error = 2.680*63.6/√18

Margin of error = 2.680*63.6/4.242641

Margin of error = 2.680*14.99066265564303

Margin of error = 40.17

Margin of error = E = 40

Answer:

68%

Step-by-step explanation:

51/75 × 100% = 68%

Answer:

This is a die used to play games. Well we generally use more than one, so we use dice. The addition of each pair of opposite sides always yields 7:

Dice games are very popular and they can also help understand how math and probability work. As with all games, probability always favors the house, but the risk of loss is part of the entertainment.

Is this question complete, or is it missing some requirements?

Answer:

17) the parallel slope is 4x.

18) the parallel slope is 2x.

19)the parallel slope is -4/-3x.

    because 4x-3y=-15

                    -4x      -4x

                     - 3y=-4x-15

                     -3      -3    -3

                        y=-4/-3-5

20)the parallel slope is -5/2x

5x+2y=6

     -5x   -5x

    2y=-5x+6

    2      2    2

y=-5/2x + 3

Step-by-step explanation:

don´t forget to brainllest!:)

Answer:

Marguerite sailed 4 hours on Saturday and 3 hours on Sunday.

Step-by-step explanation:

Answer:

❌She sailed for 4 hours.

✅She sailed for 7 hours.

❌She sailed 44 miles in all.

✅  She sailed 77 miles in all.

Your Welcome!!!

Answer:

-3

Step-by-step explanation:

Answer:

x = − 14

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helps :)

Answer:

x= -14

Step-by-step explanation:

Isolate x to one side of the equation so subtract the 6x from 8x to get 2x

New equation

2x+16= -12

Now subtract 16 from both sides, so 16 minus 16 cancels out and then -12 - 16 equals -28

Newest equation

2x= -28

divide by 2 to isolate the x

So the answer is -14

x= -14

Hope this helps you!!!

Answer:

Step-by-step explanation:

(C) ( - 10, 6 )

Answer:

70 degrees

Step-by-step explanation:

2x+15=4x-5

subtract 2x from both sides

15=2x-5

add 5 to both sides

2x=20

divide both sides by 2 to get x by itself

x=10

You now have to add the equations together and plug in the x

(2(10)+15) + (4(10)-5)

(20+15) + (40-5)

35+35= 70

70 degrees

Answer:

Maria

Step-by-step explanation:

Find the ratio of powdered mix to water for each drink.

For Maria:

(2/3 cup) / (2 gallon)

= 1/3 cup per gallon

For Franco:

(1 1/4 cup) / (5 gallon)

= (5/4 cup) / (5 gallon)

= 1/4 cup per gallon

Since 1/3 is bigger than 1/4, Maria's sports drink is stronger.

Answer:

0.24 → -0.24

1/4 → -1/4

0 → 0

-5 → 5

240 → -240

Step-by-step explanation:

Hope this helped! :)

Answer:

D) 2

Step-by-step explanation:

When you have [tex]2\frac{3}{4}[/tex] and you subtract [tex]\frac{3}{4}[/tex] from it, you result in 2.

the [tex]\frac{3}{4}[/tex] in the 2 and by itself cancel out.

#teamtrees #WAP (Water And Plant)

Answer:

M and N are similar but not congruent

Step-by-step explanation:

M and N look the same but aren´t the same width or height so there similar but not congruent.

Answer:x=2.6

Step-by-step explanation:

Simplifying (5x + 15) = 28 Reorder the terms: (15 + 5x) = 28 Remove parenthesis around (15 + 5x) 15 + 5x = 28 Solving 15 + 5x = 28 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-15' to each side of the equation. 15 + -15 + 5x = 28 + -15 Combine like terms: 15 + -15 = 0    0 + 5x = 28 + -15 5x = 28 + -15 Combine like terms: 28 + -15 = 13 5x = 13 Divide each side by '5'. x = 2.6 Simplifying x = 2.6

Answer:

3:7

Step-by-step explanation:

total no. of shapes:

8+6=14shapes

ratio is;

triangle:total shapes

6:14=6/14

=3/7

ratio is 3:7

Answer:

I believe it would be 3n^2 (last option)

Step-by-step explanation:

By definition;

monomial- one term

coefficient- the number in front of a variable

(in this case, without the squared power, it would look something along the lines of "3n", where the 3 is the coefficient and the "n" is the variable.)

sooooooo,

even without the "2nd degree" we can just use the system of elimination and cross out the answers that don't consist of one number, and that don't have a coefficient of 3.

I hope this answer was helpful, please let me know if you got it correct. :)

Answer:

McDonald’s Quarter Pounders = 67 mg of cholesterol

Burger King Whoppers = 87 of cholesterol

Step-by-step explanation:

McDonald’s Quarter Pounders = m

Burger King Whoppers = b

2m + 3b = 395

3m + 1b = 288

3m + b = 288

b = -3m + 288

2m + 3b = 395

2m + 3(-3m + 288) = 395

2m - 9m + 864 = 395

- 7m + 864 = 395

- 7m/7 = -469/7

-m = -67

-m/-1 = -67/-1

m = 67

2m + 3b = 395

2(67) + 3b = 395

134 + 3b = 395

3b = 395 - 134

3b = 261

3b/3 = 261/3

b = 87

Check: m = 67; b = 87

2m + 3b = 395

3m + 1b = 288

2m + 3b = 395

2(67) + 3(87) = 395

134 + 261 = 395

395 = 395

3m + 1b = 288

3(67) + 1(87) = 288

201 + 87 = 288

288 = 288

(Probs too late but welp :p)