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kondor19780726 [428]
3 years ago
15

Ill give you Brainliest

Mathematics
1 answer:
kipiarov [429]3 years ago
7 0

Answer:

Each spend $12.71, Total spend $50.84

Step-by-step explanation:

42.38/4=10.595

10.595(.2)=2.119

10.595+2.119=12.714

round to 12.71 because there are no thousandths in money.

12.71(4)=50.84

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If f(z)= sqrt z2+8z , then how much does f(z) increase as z goes from 7 to 8?
Nuetrik [128]

Answer:

B

Step-by-step explanation:

f(7)=\sqrt{7^2+8*7}=\sqrt{49+56}=\sqrt{105} \approx 10.247\\f(8)=\sqrt{8^2+8*8}=\sqrt{128}=8\sqrt{2} \approx 11.314\\f(8)-f(7)=11.314-10.247=1.067 \approx 1.07

3 0
3 years ago
I need help!!!!!!!!!!!!!
never [62]

Answer:

The perimeter is 38 but it gets rounded to 40

Step-by-step explanation:

7 0
3 years ago
What is the length of the unknown side?
777dan777 [17]

Answer:

Hi there!

The correct answer is: 20

Step-by-step explanation:

knowing this a right triangle you can solve this problem in two ways

Method One: Pythagorean Theorem

a^2 + b^2 = c^2 then plug in the values

(12)^2 + (16)^2 = c^2 this will come out to be 400 = c^2

square root both sides and you get c = 20

Method Two: Pythagorean Identities

if you ever learned the Pythagorean identity 3,4,5

this triangle is indeed a 3,4,5 triangle it's just that each side is multiplied by the factor 4

so in this case since you know the missing side should be 5 you just multiply 5 by 4 and you get 20

 

4 0
3 years ago
Candice spent 5 1/4 hours doing her homework. Her brother, Ronald, spent 1/2 that number of hours doing his homework. How many h
ra1l [238]

B, 2 5/8.

2 and 5/8 times itself is 5 1/4, meaning its half of 5 1/4.

3 0
3 years ago
Please help asap! Due tonight!
oksano4ka [1.4K]

Answer:

Second choice, 3

Step-by-step explanation:

a^2 + b^2 = c^2

4^2 + b^2 = 5^2

16 + b^2 = 25

b^2 = 9 (square root both sides)

b = 3

7 0
3 years ago
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