All categories

3 years ago

Evaluate the given algebraic expression for x = 7 and y = 3.

Mathematics

2 answers:

hichkok12 [17]3 years ago

8 0

Answer:

B. 20

Step-by-step explanation:

x = 7 and y = 3.

2x = 2y becomes 2(7) + 2(3).

2 times 7 is 14, and 2 times 3 is 6.

2(7) + 2(3) becomes 14 + 6.

14 + 6 = 20, therefore B is the correct answer.

BigorU [14]3 years ago

7 0

AnswerB. 20

Step-by-step explanation:

You might be interested in

Which fraction, decimal number, and percent are equivalent?

uranmaximum [27]

Answer:

A. 2/5, 0.40, 40%

Step-by-step explanation:

To turn a fractions into a decimal divided the numerator by the denominator. 2/5=0.40.

8 0

3 years ago

If r=7 and S=10, find R. Round answer to the nearest tenth.

ivolga24 [154]

I believe the answer is 35 degrees, or A.

8 0

4 years ago

Read 2 more answers

X-intercept =2; y-intercept =4/3 Find he equation of the line

Neko [114]

Y = mx + b
plug in the numbers.
y = 4/3 + 2

7 0

3 years ago

IM IN A TEST NOW WILL AWARD BRAINLIEST!!!!!

Oksanka [162]

The product has decreased by 80 %

Solution:

The product of the original numbers: xy

One number is decreased by 75 %

Let x be the number decreased by 75 %

new number = x - 75 % of x

$new\ number = x - 75 \% \times x\\\\new\ number = x(1-75 \%)\\\\new\ number = x(1-\frac{75}{100}) = x(1-0.75) = 0.25x$

Another number is decreased by 20 %

Let y be the number decreased by 20 %

new number = y - 20 % of y

$new\ number = y - 20 \% y\\\\new\ number = y(1-20 \%)\\\\new\ number = y(1-\frac{20}{100}) = y(1-0.2) = 0.8y$

Now the product is given as:

$product = 0.25x \times 0.8y = 0.2xy$

Now we have to find the percent decreased

Subtract new product and original product and then divide by original product . Multiply the result by 100 to get percentage

$percent\ decrease = \frac{0.2xy - xy}{xy} \times 100\\\\percent\ decrease = \frac{-0.8xy}{xy} \times 100 = -0.8 \times 100 = -80$

Here negative sign denotes decrease

Thus the product has decreased by 80 %

3 0

3 years ago

What her answer ? ////////////////////////

pshichka [43]

It makes a zig zag across the graph so i think none of the above

5 0

3 years ago