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Snowcat [4.5K]
3 years ago
13

Can somebody please help me with these four math questions?

Mathematics
2 answers:
alexandr1967 [171]3 years ago
8 0
For question 4, it would be a^2+b^2=c^2. So you would set up the equation as a^2+14^2=18^2. the third side would equal approximately 23cm.
Nina [5.8K]3 years ago
8 0
1.Area of rectangle=150 sq.feet
New length=15/5=3 feet
New breadth=10/5=2 feet
New area=15 sq.feet
∴Area is decreased by 135 sq.feet.

2. TSA of a sphere =4πr²=100π
⇒4r²=100
⇒r²=25
⇒r=5 cm
Volume=4/3πr³
=4/3×3.14×125
=392.5 cm³
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Multiple choice plz plz help! And explain :) thank u!
kolbaska11 [484]
It all the way across a circle so 

7.3+7.3=14.6 so that your answer

6 0
3 years ago
Hi Please answer this for me ill thank u and rate I Need it asap Thank U :D
Law Incorporation [45]

Answer:4) 1.  (3^4)^3=3^12    ,

                  2.(-10^3)^6=-10^18  others are similar...

              5) 1.  (2^7/2^5)=2^2,4  ,

                  2.(a^7/a^3)=a^4   ,

                  7.  [(-4)^3 x (-4)^5)]/[ (-4)^2 x(-4)^3]=4^3   others are similar...

Step-by-step explanation: 4)1. step1. 3^(4x3) ,  2. step1. -10^(3x6)

                                                    step2. 3^12      ,     step2. -10^18

                                              5)1. step1. 2^(7-5)  ,  2. step1. a^(7-3)

                                                     step2. 2^(2)     ,      step2. a^(4)

                                                 7. step1. -4^(3+5)/-4^(2+3)

                                                     step2. -4^(8)/-4^(5)

                                                     step3. 4^(8-5)

                                                     step4. 4^(3)

8 0
2 years ago
drag and drop each expression to correctly classify if it as having a positive or negative product just put them in order from p
JulsSmile [24]

Answer:

The two in the middle are the negatives and the two that are on the sides are positive.

8 0
2 years ago
Tanya drove 3 1/2 hours and used 1/3 tank of gas. For how long could Tanya drive using​ 1/2 ​tank of gas? Enter your answer as a
valina [46]
Ok so we know that using 1/3 of the tank, Tanya managed to drive 3 1/2 hours.

That means if she used the entire tank, w
she would have been able to drive 3 times as long, or (3 1/2 x 3) hours, which is 10 1/2 hours.

This means if she used half the tank (1/2), she would have driven half of 10 1/2 hours, which is 5 1/4 hours

Hope this helped
8 0
3 years ago
Given the expression: 5x^10-80x^2 Part A: Rewrite the expression by factoring out the greatest common factor
Jlenok [28]

Answer:

A) 5x²(x^(8) - 16)

B) 5x²[(x⁴ + √16) • (x² + ∜16) • (x + (8√16) • (x - (8√16))]

Step-by-step explanation:

We are given the expression;

5x^(10) - 80x²

A) Since the expression is, 5x^(10) - 80x², the greatest common factor is 5x². So we will factorize that out.

So, we have;

5x²(x^(8) - 16)

B) The complete factorization of 5x²(x^(8) - 16) will be;

5x²[(x⁴ + √16) • (x⁴ - √16)]

Now, (x⁴ - √16)] can be broken than further into;

(x² + ∜16) • (x² - ∜16)

Also, (x² - ∜16) can be broken down into;

[(x + (8√16) • (x - (8√16))

So, our complete factorization gives us;

5x²[(x⁴ + √16) • (x² + ∜16) • (x + (8√16) • (x - (8√16))]

5 0
3 years ago
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