7(x+4)=-21 help find x plz

Answers

Answer 1
Answer:

Answer:

x = -7

Step-by-step explanation:


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If I have a 8 inch by 10 inch poster what is the area​

Answers

Answer:

80 inches

Step-by-step explanation:

8x10=80

because, lxw

l= length

w= width

Answer:

80

Step-by-step explanation:

im not trying to copy the answer above, im just going to say why its 80

so firstly we have the known dimensions of 10 by 8, so in this case we have 10 rows that each contain 8 units

we can then multiply the 8 units of one row, by the amount of rows there are total (in this case 10) to get the total unit count, or area

8 * 10 = 80

(NOTE: you can use the Asterisk (*) as a multiplication mark as to not get it confused with x as in the variable, as with slash (/) for dividing)

hope this helps with this and other problems, credits to the answer above for doing the initial work :)

5.5x10^9 times 2.3x10^7

Answers

5.5* 10^9\cdot 2.3* 10^7\implies (5.5\cdot 2.3)* 10^910^7 \n \quad \n \textit{recall the exponent rules} \n \quad \n (5.5\cdot 2.3)* 10^910^7\implies (5.5\cdot 2.3)* 10^(9+7)

Answer:

Step-by-step explanation:

So 5.5 x 10^9 times 2.3 x 10^7 would equal to 126 500 000.

Please help please please help

Answers

X=1

3*4=12
x*4=4

Or

12/4=3
4/4=1

Answer:

x=1

Step-by-step explanation:

i did it

2. Anne needs to know how much of her back yard will be used by her newcircular pool. *
1 point
11 feet
What is the area of the pool? Use 3.14 for T.

Answers

Answer:

see below

Step-by-step explanation:   6  13  8  09

area = π r²    is the equation to calculate the area of the pool   r = radius

I don't no if the 1.11 ft is the diameter of the radius, so I will use the 1.11 ft as the diameter

diameter = 2×radius

diameter / 2 = radius

area = π (d/2)²   = T (d/2)²              d = diameter      π  = T      

        = 3.14(1.11 / 2)²              

        = 3.14 × (0.555)²

        = 0.9677 ft²    which seems like a small pool!

I will give you brainles I promise please help me

Answers

Answer:

1)64

2)75

Step-by-step explanation:

Let the number be x

1)According to the question

50%×x=32

½×x=32

x=32×2

x=64

Let the number be y

2) according to the question

10%×y=7.5

⅒×y=7.5

y=7.5×10

y=75

Plz help me simply this

Answers

Answer:

Step-by-step explanation:

\sqrt[5]{u^(10)*p^(15)}*\sqrt[4]{u^(16)*p^(18)}=  \sqrt[5]{u^(2*5)*p^(3*5)}*\sqrt[4]{u^(4*4)*p^(16*2)}\n\n\n=\sqrt[5]{(u^(2))^(5)*(p^(3))^(5)}*\sqrt[4]{(u^(4))^(4)*p^(4*4)*p^(2)}\n\n=\sqrt[5]{(u^(2))^(5)*(p^(3))^(5)}*\sqrt[4]{(u^(4))^(4)*(p^{4)^(4)}*p^(2)}\n\n=u^(2)*p^(3) * u^(4)*p^(4)*\sqrt[4]{p^(2)}\n\n=u^(2+4)*p^(3+4)*\sqrt[4]{p^(2)}\n\n= u^(6)p^(7)\sqrt[4]{p^(2)}