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Varvara68 [4.7K]
3 years ago
12

Marcus hikes at a rate of 3 miles per hour. If he hikes for 7 and a half hours, how many miles will he hike?

Mathematics
1 answer:
sashaice [31]3 years ago
6 0
The answer is 22.5 you multiply the 7 and the 3
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Sergey is solving 5x2 + 20% – 7 = 0. Which steps could he use to solve the quadratic equation by completing the
Mrac [35]

Answer:

5(x^2+4x)=7

5(x^2+4x+4)=7+20

(x+2)=\pm\sqrt{\frac{27}{5}}

Step-by-step explanation:

we have

5x^2+20x-7=0

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

5x^2+20x=7

step 2

Factor 5 left side

5(x^2+4x)=7

step 3

Complete the square

5(x^2+4x+2^2)=7+2^2(5)

5(x^2+4x+4)=7+20

5(x^2+4x+4)=27

step 4

Rewrite as perfect squares

5(x+2)^2=27

step 5

(x+2)^2=\frac{27}{5}

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(x+2)=\pm\frac{3\sqrt{15}}{5}

step 6

x=-2\pm\frac{3\sqrt{15}}{5}

6 0
3 years ago
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Use the equation below to find y, if m=4, x = 3, and b=11
Afina-wow [57]

Answer:

y = 23

Step-by-step explanation:

Assuming the equation not below is y = mx + b form...

m = 4

x  = 3

b = 11

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48. Calculate the value of c in the triangle below.
guapka [62]

Answer:

17

Step-by-step explanation:

c = a^2 + b^2 = 15^2 + 8^2 = 17

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Step2247 [10]

Answer:

% of workers walk

10%

% of workers bike=

25%

% of workers carpool

15%

% of workers drive alone=

50%

Step-by-step explanation:

if you divide them you get the answer

like ex

2/20 is actually 2÷20 so you get 0.10 which is 10%

and if you add them all they equal to a 100 percent

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3 years ago
Help plz ill give u BRAINEST ​
d1i1m1o1n [39]

Answer:

First option, relation 1 and relation 4

Step-by-step explanation:

Because they both cross one of the two axes once, which from what I remember, makes it a function.

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