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Alona [7]
2 years ago
6

PLEASE HELP ITS MATH THANK YOUUUU

Mathematics
1 answer:
ioda2 years ago
6 0

Answer:

35 : w = 1 : 2

obviously w = 70

Step-by-step explanation:

Hopefully this helps you :)

Have a nice day.

apokibunnyavatar

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A group of friends went to lunch, and their bill was $132.50. An 18% gratuity was added to the bill. What was the total amount o
Serggg [28]

Answer:

$156.35

Step-by-step explanation:

we know that

A group of friends went to lunch, and their bill was $132.50

In this problem

$132.50 represent the 100%

100%+18%=118%

so

using proportion

Find out the total amount that represent 118%

Let

x ----> the total amount of the bill

\frac{\$132.50}{100\%}=\frac{x}{118\%}\\\\x=132.50(118)/100\\\\x=\$156.35

7 0
3 years ago
What is the value of b in the equation below?
grin007 [14]

Answer:

I think it is -10

Step-by-step explanation:

Using a^m*a^n=a^(m+n)

b=(m+n)

In this question,

m= -8 and n= -2

so b= (m+n)=(-8+-2) = -10

6 0
3 years ago
The attic shown is a triangular prism. Insulation will be placed inside the walls, not including the floor. Find the surface are
maria [59]

Answer:

1,125\ ft^{2}

Step-by-step explanation:

we know that

The surface area of the triangular prism that will be covered with insulation is equal to the area of the two triangular faces plus the two lateral rectangular faces

so

SA=2[\frac{1}{2}(15)(15)]+2[(30)(15)]= 1,125\ ft^{2}

3 0
3 years ago
2.5x + 1 = 26 help hurryyyyyyyyy!!!!?!?!??!?!?!
kondaur [170]

Answer:

2.5x=26-1

x=25/2.5

x=10

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
scientist needs 120 liters of a 20% acid solution for an experiment. The lab has available a 25% and a 10% solution. How many li
sattari [20]

Answer:

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

Step-by-step explanation:

If x is the liters of 25% solution, and y is the liters of 10% solution, then:

x + y = 120

0.25x + 0.10y = 0.20(120)

Solve the system of equations using substitution or elimination.  Using substitution:

0.25x + 0.10(120 − x) = 0.20(120)

0.25x + 12 − 0.10x = 24

0.15x = 12

x = 80

y = 40

The scientist needs 80 liters of 25% solution and 40 liters of 10% solution.

4 0
2 years ago
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