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Tema [17]
3 years ago
11

What did I do wrong on this problem?

Mathematics
2 answers:
Reil [10]3 years ago
5 0

9(-4+r)=-153

-36 + 9r = -153

9r = -117

r= -13

telo118 [61]3 years ago
3 0
Check my work. Looks a lot like yours except a few things here and there. Hope it helps.

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In the expression 7³ - 4 · 3 +8, the first operation is? A. An Exponent B. Subtraction C. Multiplication D. Addition
Vikki [24]

Answer:

An exponent

Step-by-step explanation:

look at PEM/DA/S

Parenthesis

EXPONENTS

and then you can stop the first operation is 7^3

this is an exponent

(also brainliest if this helped please!)

6 0
4 years ago
Dream borrowed $500 at an interest rate of 8%. At the end of the loan period, she had to pay back $530. How long was the loan fo
Aliun [14]

Answer:

The loan was for 9 months only

Step-by-step explanation:

In this question, we are concerned with calculating the time taken for a loan om an interest to be paid back

To calculate this, we use the simple interest formula

Mathematically;

I = PRT/100

where P is the principal which is the amount borrowed and that is $500 according to the question

R is the rate which is 8% according to the question

Interest can be calculated by subtracting the principal from the  amount paid back = 530-500 = 30$

We now plug these values into the equation

30 = (500 × 8× T)/100

100 × 30 = 4000T

T = 3000/4000

T = 0.75 (same as 0.75 × 12 months = 9 months)

5 0
3 years ago
I = $97.30<br> P = $1,200<br> R=4.5%<br> T=
frosja888 [35]

Answer:

T = 1yrs and 8month

Step-by-step explanation:

S.I = $97.3O

S.I = PTR/100

$<u>97.30</u> = <u>$1200 × 4.5 × T</u>

1 100

Cross multiply

$5400T = $9730

divide both sides by$5400

T = 1.8yrs

8 0
3 years ago
Find the value of x and y of the equilateral triangle. I need it ASAP
katrin2010 [14]

Answer:

x=12, y=30

Step-by-step explanation:

to find x:

in a equilateral triangle, all three sides are congruent, so:

4x-4=3x+8

x-4=8

x=12

to find y:

in an equilateral triangle, all the angles are 60°, so:

2y=60

y=30°

7 0
3 years ago
Ricky can type 161 words in 7 minutes. how many can words can he type in 20 minutes.
kakasveta [241]
So 161 divide 7 equals 23 so therefor he types 23 words per minutes. 23 times 20 equals 460. I think he can type 460 words in 20 minutes.
8 0
3 years ago
Read 2 more answers
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