3 years ago

7.1 as a percentage

Mathematics

1 answer:

kifflom [539]3 years ago

8 0

Answer:

its 710%

Step-by-step explanation:

710% hope it helps!

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The triangles in the image are similar. Solve for x. A) 7 B) 6 C) 10 D) 5

Natalka [10]

ANSWER

A) 7

EXPLANATION

The given triangles are similar

Hence the corresponding sides are in the same proportion.

$\frac{3x + 4}{30} = \frac{30}{36}$

Simplify the right hand side:

$\frac{3x + 4}{30} = \frac{5}{6}$

Cross multiply;

6(3x+4)=5×30

Expand

18x+24=180

18x=150-24

18x=126

$x = \frac{126}{18} = 7$

4 0

3 years ago

If one half of a number is 8 less than two thirds of the number what is the number

ludmilkaskok [199]

Answer:

Step-by-step explanation:

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3 years ago

An electrician needs 6 rolls of electrical wire to wire each room in a house. How many rooms can he wire with 3/4 of a roll of w

Vera_Pavlovna [14]

Answer:

1/8 room

Step-by-step explanation:

(3/4 roll)/(6 rolls/room) = (3/4)(1/6) rooms = 1/8 rooms

With 3/4 roll of wire, the electrician can wire 1/8 of a room.

4 0

3 years ago

Two cooks purchased plates and cups at the same store. The first cook bought 4 plates and 5 cups for a total of $25.25. The seco

Thepotemich [5.8K]

X=number of plates
y=number of cups

4x+5y=25.25

7x+3y=25.50

Add the two equations together:

11x+8y=50.75
11x=50.75-8y

x= $\frac{50.75-8y}{11}$

Plug x into the first equation:
4x+5y=25.25

4( $\frac{50.75-8y}{11}$ ) = 25.25

$\frac{4(50.75-8y)}{11}$ = 25.25

$\frac{203-32y}{11}$ = 25.25

203-32y = 277.75

-32y=74.75
32y=-74.45
y=2.34 (rounded to nearest hundredth)

The price of a plate is $2.34

5 0

3 years ago

Can you please help me

finlep [7]

Answer:

x=10

Step-by-step explanation:

8x+10=6x+30

8x-6x=30-10

2x=20

x=10

3 0

4 years ago