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tigry1 [53]
3 years ago
15

7th grade math help me please

Mathematics
2 answers:
g100num [7]3 years ago
8 0

Step-by-step explanation:

1. 7y=28

7÷7y=28÷7

y=4

2.-4k=40-8

-4k÷-4=32÷-4

k= -8

3. 47+5=2d

42=2d

42÷2=2d÷2

21=d

Cloud [144]3 years ago
6 0

Answer:

for number 1: y = 4

for number 2: k = -8

for number 3: d = 21

Step-by-step explanation:

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38b/-19<br><br> please help me
Natasha2012 [34]
You didn't write what to do with the fraction but I think you meant to ask to simplify it:
38b/-19
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-2b
7 0
3 years ago
Problem Page A principal of $2100 is invested at 7.75% interest, compounded annually. How much will the investment be worth afte
just olya [345]

Answer:

After 12 years the investment will be worth $5145.

Step-by-step explanation:

The formula used for compounded interest is:

A = P(1+r/n)^nt

where,

A = future value

P = Principal Amount

r = interest rate

n = no of times interest is compounded

t = time

In the question given:

A=?

P = $2100

r = 7.75% or 0.0775

n = 1

t= 12

A= 2100*(1+0.0775/1)^1*12

A= 2100 *(1+0.0775)^12

A= 2100 *(1.0775)^12

A= 2100 * 2.45

A= 5145

So, after 12 years the investment will be worth $5145.

6 0
3 years ago
If m angle B=m angle D=41, find m angle C so that quadrilateral ABCD is a parallelogram
Charra [1.4K]

ANSWER

139°

EXPLANATION

One of the interior angle properties of a parallelogram is that adjacent interior angles are supplementary.

This means that, the adjacent interior angles add up to 180°.

If

m \angle \: B = m \angle \: D = 41

Then

m \angle \: C +  m \angle \: D = 180 \degree

OR

m \angle \: B +  m \angle \:C= 180 \degree

\implies41 \degree +  m \angle \:C= 180 \degree

\implies m\angle \:C= 180 \degree - 41 \degree  = 139 \degree

8 0
3 years ago
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Radda [10]
The complete question in the attached figure

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the answer Part A) is
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the answer Part B) is
Are needed 74 ft <span>of baseboards</span> for the room

6 0
3 years ago
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Sumi lives 2 miles from school. valerie lives 10,542 feet from school. who lives closer to school ?
nasty-shy [4]
Sumi because 10452 feets are 1.997 miles
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3 years ago
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