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GenaCL600 [577]
2 years ago
10

Helppppp!!! 50 pts!

Mathematics
2 answers:
tia_tia [17]2 years ago
6 0
  • Le the number be c

  • Sum of a number and c means c+5
  • 3times that means 3(c+5)

So

The expression is

  • 3(c+5)=7

On solving

  • 3c+15=7
  • 3c=-8
  • c=-8/3
klasskru [66]2 years ago
5 0

Answer:

3(C + 5) = 7

Step-by-step explanation:

Let C = unknown number

The <u>sum</u> of a <u>number and 5</u>:

C + 5

<u>Three times</u> the sum of a number and 5:

3(C + 5)

Three times the sum of a number and 5 <u>is 7</u>:

3(C + 5) = 7

<u>To solve</u>

Use the distributive law:  a(b + c) = ab + ac

⇒ 3C + 15 = 7

Subtract 15 from both sides:

⇒ 3C = -8

Divide both sides by 3:

⇒ C = -8/3

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BRAINLY GIVEN
olga2289 [7]

Answer:

the answer to a is $75.14

the answer for B is $5,773

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
after 1 second the ball is 76 feet in the air: after 2 seconds it is 144 feet in the air. Find the height of the function. h(x)=
MArishka [77]
General equation for height, h
h = ut + 0.5gt^2

at t=1s, h = 76 feet
76 = u*1 + 0.5*a*1^2
76 = u + 0.5a

at t=2s, h = 144 feet
144 = u*2 + 0.5*a*2^2
144 = 2u + 2a
72 = u + a

Subtract 2 equations
0.5a = -4
a = -8
u = 80

So the equation,
h(x) = 80t + 0.5*(-8) t^2
h(x) = 80t - 4t^2
4 0
3 years ago
What is the median of the data set:348,349,354,355,357,359,360,367,37,381,386,388,388
r-ruslan [8.4K]

Answer:

<u>359 </u>

Step-by-step explanation:

median is the middle value in an ordered list of numbers.

359 is the middle value of median data.

Hope this helps!

Thanks!

7 0
3 years ago
Read 2 more answers
Find the height of a square pyramid that has a volume of 75 cubic feet and a base length of 5 feet
harkovskaia [24]
75= 5^2h/3
75= 25h/3
225= 25h
9=h

Final answer: 9ft
7 0
4 years ago
Each person at a picnic chose atleast one piece of a fruit one third of the people chose an apple three -quaters of the people c
Natali5045456 [20]

Answer:

-1/12x

Step-by-step explanation:

Let total people at the picnic=x

People who chose apple= 1/3x

People who chose orange= 3/4x

People who chose each of the fruit= People who chose apple + People who chose orange

=1/3x + 3/4x

= 4x+9x / 12

=13/12x

People who chose each of the fruit= 13/12x

what fraction of the people chose both of them?

Fraction of the people who chose both fruits= Total people at the picnic - People who chose each of the fruit

=x - 13/12x

=12x- 13x /12

= -1/12 x

3 0
3 years ago
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