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Anastaziya [24]
3 years ago
12

(3x+3)^2+(x+5)(x-4) someone help thankyou

Mathematics
2 answers:
Soloha48 [4]3 years ago
8 0
10x^2+ 19x - 11
(if the directions said to simplify)
enot [183]3 years ago
3 0
Use this. It’s really good

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What is the value of x in simplest radical form?
Ostrovityanka [42]
In this case, we will use our Pythagorean Theorem.

a = 84
b = 13
c = x

\sqrt{84^2 + 13^2} = 85

Thus, x = 85.
8 0
3 years ago
Read 2 more answers
The sides of a rectangle are in the ratio 4:7. If its longer side is 31.5 in., find the shorter side, the perimeter, and the are
Lemur [1.5K]

Answer:

Width = 18 inches

Perimeter = 99 inches

Area = 567 square inches

Step-by-step explanation:

The sides of a rectangle are in the ratio 4:7. Then

Width =4x in

Length =7x in.

If  its longer side is 31.5 in, then

Length = 31.5 in

and

7x=31.5\\ \\x=\dfrac{31.5}{7}=4.5\ in

So,

Width =4\cdot 4.5=18\ in

The perimeter is

P=2(\text{Width}+\text{Length})\\ \\=2(18+31.5)\\ \\=2\cdot 49.5\\ \\=99\ in

The area is

A=\text{Width}\cdot \text{Length}\\ \\=18\cdot 31.5\\ \\=567\ in^2

5 0
3 years ago
Mark deposits $12000 into an account that pays 4% interest, compounded annually, for 5 years. Saul deposits $10000 into an accou
Zepler [3.9K]

Answer:

mark=$2400 &Saul=$4800

Step-by-step explanation:

For mark:

p=$12000

r=4%

t=5 years

I=prt/100

12000*4*5/100= 2400

For Saul:

p=$10000

r=6%

t=8 years

SI=prt/100

10000*6*8/100= 4800

4 0
3 years ago
The price of a book is $19.75. If a customer has a coupon that allows her to save $4.50 on the price of the book, how much will
serious [3.7K]

For this case we have that the original price of the book is given by:

$ 19.75

The customer has a coupon to save part of the price of the book.

Therefore, the customer will pay

19.75 - x

Where,

x: value of the customer coupon.

We know that the customer has a coupon that has a value of $ 4.50.

Substituting values we have:

19.75 - 4.50 = 15.25

Answer:

she will pay for the book 15.25 $

7 0
3 years ago
3 eighths as a decimal?
Ilia_Sergeevich [38]

Answer:

0.375

Step-by-step explanation:

You mean 3/8 right?

3/8=0.375

5 0
3 years ago
Read 2 more answers
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