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4 years ago

Hey hey im gonna need some help on solving proportions on maps will ya help me please!

Mathematics

2 answers:

elena-s [515]4 years ago

5 0

Answer:

120 yards

Step-by-step explanation:

We know that 1 inch = 30 yards

1 inch = 30 yards

But we want to work out how much yards in 4 inches so

1 inch = 30 yards

(Multiply by 4 to from 1 to 4 so we must multiply 30 by 4)

4 inch = ? yards

4 inch = 120 yards

Hope this helps :)

Have a great day !

5INGH

Romashka-Z-Leto [24]4 years ago

3 0

ok so 1 inch=30 yards so 4 inch=?

1/30=4/x

1x=30(4)

x=120

so the actual distance is 120 yards

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The 225 students who passed all of their classes on the last report card will attend a one-hour Friday Fun-Day sponsored by the

zhenek [66]

Answer:

C. is incorrect.

Step-by-step explanation:

Calculate the percentages for each prize desired by the 50 students responding in the sample survey. See the attached image for this calculation. Multiply these percentages times the total student body of 225 students to determine the likely selection for each prize (on the attachment).

A. is correct (126 students)

B. is correct

C. is incorrect. The total is (54 + 27) = 83

D. is true

8 0

3 years ago

Determine the equation of the line that passes through the points of intersection of the graphs of the quadratic functions f(x)

timofeeve [1]

Answer: $x-2y-2=0$

Step-by-step explanation:

Given :

$f(x) = x^2 - 4 \\ g(x) = - 3x^2 + 2x + 8$

Point of intersection :

$f(x)=g(x)\\x^2-4=-3x^2+2x+8\\4x^2-2x-12=0\\2x^2-x-6=0\\2x^2-4x+3x-6=0\\2x(x-2)+3(x-2)=0\\(x-2)(2x+3)=0\\x=2\,,\,\frac{-3}{2}$

$x=2\,;f(2)=2^2-4=0\\x=\frac{-3}{2}\,; f\left ( \frac{3}{2} \right )=\left ( \frac{3}{2} \right )^2-4=\frac{-7}{4}=-1.75$

So, we have points $\left ( 2,0 \right )\,,\,\left ( -1.5,-1.75\ \right )$

Equation of line passing through two points $\left ( x_1,y_1 \right )\,,\,\left ( x_2,y_2 \right )$ is given by $y-y_1=\frac{y_2-y_1}{x_2-x_1}\left ( x-x_1 \right )$

Let $\left ( x_1,y_1 \right )=\left ( 2,0 \right )\,,\,\left ( x_2,y_2 \right )=\left ( -1.5,-1.75\ \right )$

So, equation is as follows :

$y-0=\frac{-1.75-0}{-1.5-2}\left ( x-2 \right )\\y=\frac{-1.75}{-3.5}\left ( x-2 \right )\\y=\frac{1}{2}(x-2)\\2y=x-2\\x-2y-2=0$

4 0

4 years ago

Kareem cannot decide which of two washing machines to buy. The selling price of each is 660$. The first is marked down by 40%.

natka813 [3]

Answer:

See explanation

Step-by-step explanation:

The selling price is $495.

The first washing machine:

- is marked down by 30%

$495 - 100%

$x - 100% - 30% = 70%

Find the value of x:

The second washing machine:

- is marked down by 20% with an additional 10% off

$495 - 100%

$y - 100% - 20% = 80%

Find y:

$y=$495 . 0.8 = $396$

Now,

$396 - 100%

$z - 100% - 10% = 90%

Find z:

$z=$396.0.9 = $356.40 = $356$

Thus, the sale price of the first washing machine is $347 and the sale price of the second washing machine is $356. The second machine is more expensive.

6 0

3 years ago

In the condition 500 hen and 75 are deid profit is 2% and the each and price is 120 and find the CP

Shtirlitz [24]

Answer:

120

Step-by-step explanation:

7 0

4 years ago

4 times the difference of 10 and 7.

lbvjy [14]

Answer:

very easy

Step-by-step explanation:

(10-7)x4

3x4=12

hope it helps you

mark me as brainlist

3 0

3 years ago