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3 years ago

Which equation could you use to solve for x in the proportion 4/5=9/x?

Mathematics

2 answers:

andre [41]3 years ago

6 0

Answer:

11.25

Step-by-step explanation:

Step 1:

4/5 = 9/x Proportion

Step 2:

4x = 45 Multiply

Step 3:

45 ÷ 4 Divide

Answer:

x = 11.25

Hope This Helps :)

inessss [21]3 years ago

3 0

Answer:

$\frac{4}{5} =\frac{9}{x}$ or $x = \frac{9*5}{4}$

Step-by-step explanation:

$\frac{4}{5} =\frac{9}{x}$

$9*5 = 45$

$45=4x\\$

$x=11.25$

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Write an algebraic equation for this tape diagram. Then determine the value of x. You may use a calculator.

tresset_1 [31]

Answer:

3× + 16 = 22.75

3× = 22.75 - 16

3x = 6.75

3 3

x = 2.25

7 0

2 years ago

Ava buys a used car that costs $6,700.00. She trades in her old car for $3,995.00. How much does she pay in cash for the car?

irakobra [83]

So this statement is caused for subtracting. So we have to subtract 6,700.00 from 3,995.00 and the answer would be 2705
Hope this helps :)

4 0

2 years ago

ΔEFG is located at E (0, 0), F (−7, 4), and G (0, 8). Which statement correctly classifies ΔEFG?

MariettaO [177]

Answer:

ΔEFG is an isosceles triangle.

Step-by-step explanation:

Given:

E (0, 0),

F (−7, 4),

G (0, 8)

ΔEFG

Solution:

Distance formula

Distance d = $\sqrt{(x_2-x_1)^2 +( y_2-y_1)^2$

Step 1: Finding the length of EF

By using distance formula,

$EF = \sqrt{(-7 - 0)^2 + (4-0)^2}$

$EF = \sqrt{(49) + (16)}$

$EF = \sqrt{(49) + (16)}\\EF = \sqrt{65}\\$

Step 2: Finding the length of FG

By using distance formula,

$FG = \sqrt{(0-(-7))^2+(8-4)^2}\\FG = \sqrt{(7)^2 +(4)^2}\\FG = \sqrt{49 +16}\\FG = \sqrt{65}$

Step 2: Finding the length of GE

$GE= \sqrt{(0-0)^2 + (0-8)^2}\\\\GE =\sqrt{(-8)^2}\\GE = \sqrt{64}\\GE = 8$

Thus we could see that the sides EF = FG

So it is a isosceles triangle.

6 0

2 years ago

Plzz help me to find coefficient in binomial theorem (25 points)

Viefleur [7K]

Denote x2 by y. 

 

(x2-3)7=(y-3)7 

 

This is a binomial expansion in y, and you want the coefficient of y4 because y4=x8 

 

You have 7 terms of (y-3) in (y-3)7. To get the fourth power of y, you need to choose y from four of the terms. The number of ways you can do this is the combinations of 7 things taken 4 at a time. This is:

 

7!/(4!3!)=35

So, the coefficient of x8 in the given expansion will be 210.

HOPE IT HELPS

THANK YOU 

5 0

2 years ago

110 as a product of prime numbers

sweet [91]

$110 = 11 \times 10$

$110 = 11 \times \ 5 \times 2$

So it is the product of $5 \times 2 \times 11$

And 2,5 and 11 are prime numbers, so there you go :)

8 0

2 years ago