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DochEvi [55]
3 years ago
12

Please help! Will give brainliest if you do both. Only 9 and 12

Mathematics
1 answer:
guajiro [1.7K]3 years ago
6 0

Answer:

Answers below

Step-by-step explanation:

9a. Meg needs to find the Part because she knows the whole is 16 and the percent is 50%

9b. Steve needs to find the percent because he knows the part is 7 and the whole is 35.

12. Find 4% of 40 for the sales tax

0.04*40=1.6

Therefore the sales tax is $1.6

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The longer leg of a right triangle is 4cm longer than the shorter leg. the hypotenuse is 8cm longer than the shorter leg. find t
Alexeev081 [22]
Longer leg = x + 4

Shorter leg = x

Hypotenuse = x + 8


Using Pythagorean Theorem:

a^2 + b^2 = c^2

(x + 4)^2 + x^2 = (x + 8)^2

x^2 + 8x + 16 + x^2 = x^2 + 16x + 64

2x^2 + 8x + 16 = x^2 + 16x + 64

2x^2 +8x = x^2 + 16x + 48

2x^2 - 8x = x^2 + 48

x^2 - 8x = 48

x^2 - 8x - 48 = 0

You can complete the square from here or use the quadratic formula.

Completing the square:

x^2 - 8x = 48

x^2 - 8x + (-8/2)^2 = 48 + (-8/2)^2

x^2 - 8x + 16 = 48 + 16

(x - 4)(x - 4) = 64 or (x - 4)^2 = 64

x - 4 = +√64 OR x - 4 = -√64

x - 4 = +8 OR x - 4 = -8

x = 12 OR x = -4

However, you can't use negative 4 as a length because your length needs to be a positive.

So x will be 12.


Shorter leg: 12

Longer leg: 12 + 4

Hypotenuse: 12 + 8

8 0
3 years ago
What is the probability of getting. Either blue or green on a spinner that is 3/10 green and 1/5 blue
densk [106]
The probability is 1/2.

Hope this helps and please make mine the Brainliest answer!
4 0
3 years ago
Read 2 more answers
The table below shows data from a survey about the amount of times students spend doing homework each week. The students were ei
Anna007 [38]

Answer:

in table data from a survey about the amount of time students spend doing homework each week. The students were either in college or in high school: High Low Q1 Q3 IQR Median Mean σ

College 50 5 7.5 15 7.5 11 13.8 6.4

High School16 0 9.5 14.5 5 13 10.7 5.3 Both spreads are best described with the standard deviation.

Step-by-step explanation:

8 0
2 years ago
HELP FAST I NEVER SAW THIS BEFORE IN MY LIFE<br><br> I'll mark brainliest for the best answer!!
OlgaM077 [116]

Answer:

GIRL NO WAY IM LITTERALY TAKING THAT TEST RN AND IM TRYING TO FIGURE OUT THAT SAME QUESTION LOL

Step-by-step explanation:

BUT I THINK ITS -0.5 DONT TAKE MY WORD FOR IT IM JUST ASSUMING ITS THE ANSWER BC ITS THE ONLY ONE THAT MAKES SENSE

8 0
3 years ago
What is the slope of a line that passes through -8, -16 and 18, 5?
ddd [48]
Slope formula:

y2 - y1
_____
x2 - x1


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