All categories

3 years ago

11) Solve the multiplication equation. Check your answer. 39 = 13y what does y equal?

Mathematics

2 answers:

ki77a [65]3 years ago

6 0

Answer:

y = 3

Step-by-step explanation:

39 = 13y

Divide each side by 13

39/13 = 13y/13

3 = y

Check

39 = 13*3

39 = 39

Our solution checks

denis-greek [22]3 years ago

5 0

Answer:

y = 3

Step-by-step explanation:

39 = 13y

y = 3 (explanation: by dividing 13)

Check answer:

39 = 13(3)

39 = 39

You might be interested in

What is the answer to 3/7+2/7

Ad libitum [116K]

5/7 is your answers

7 0

4 years ago

Two numbers 6 away from -3 would it be 0?

SSSSS [86.1K]

Answer:9

Because,

Two number six’s is twelve.

And if you add twelve and negative three it would equal nine

Or subtract three from twelve

5 0

3 years ago

Alvin has $760 less invested in 7% than he has at 5%. If his annual income from these two investments is $51.20, how much does h

kondor19780726 [428]

Answer:

Alvin invested $110 at rate of 7% and invested $870 at rate of 5%

Step-by-step explanation:

we know that

The simple interest formula is equal to

$I=P(rt)$

where

I is the Interest Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem

Let

x------> the amount of money invested at rate of 5%

At rate of 7%

we have

$t=1\ years\\ P=(x-\$760)\\r=0.07$

At rate of 5%

we have

$t=1\ years\\ P=x\\r=0.05$

substitute in the formula

$51.20=(x-760)(0.07*1)+(x)(0.05*1)$

$51.20=0.07x-53.2+0.05x$

$51.20+53.2=0.12x$

$x=104.4/0.12=\$870$

therefore

Alvin invested ($870-$760)=$110 at rate of 7%

Alvin invested $870 at rate of 5%

8 0

3 years ago

e mean IQ for 100 residents of the local apartment complex is 110. What is the best point estimate for the mean IQ for all resid

KengaRu [80]

Answer:

110 IQ too!

Step-by-step explanation:

For statistical problems, especially for ones with large enough sample sizes like this one (n = sample size = 100), the means for various samples is usually equal to the population mean.

It is the standard deviation of sample that differs from the standard deviation of the population through

σₓ = σ/√n

But, The mean of the sample = The population mean

μₓ = μ = 110 IQ

8 0

3 years ago

A piece of cardboard has been cut into a rectangle with side lengths represented by 9.5x+14.3y cm and 11.7x+22.8y cm. What is th

kati45 [8]

Given:

Sides of a rectangle are 9.5x+14.3y cm and 11.7x+22.8y cm.

To find:

The perimeter of the cardboard in terms of x and y.

Solution:

We know that, perimeter of a rectangle is

$Perimeter=2(length +width)$

Now,

$Perimeter=2[(9.5x+14.3y) +(11.7x+22.8y)]$

On combining like terms, we get

$Perimeter=2[(9.5x+11.7x) +(14.3y+22.8y)]$

$Perimeter=2[21.2x +37.1y]$

using distributive property, we get

$Perimeter=2(21.2x) +2(37.1y)$

$Perimeter=42.4x+74.2y$

Therefore, the perimeter of the cardboard in terms of x and y is 42.4x+74.2y cm.

4 0

3 years ago