3 years ago

The ratio of pencil to rulers is 6:10. the are 21 pencils. how many rulers are there

Mathematics

1 answer:

Reika [66]3 years ago

8 0

There would be 35 rulers.

In order to solve this, use cross multiplication.

6/10 = 21/x -----> cross multiply

10*21 = 6*x

210 = 6x

35 = x

You might be interested in

Two semicircles are attached to the sides of a rectangle as shown.

melomori [17]

Answer:

$157\ in^{2}$

Step-by-step explanation:

we know that

The area of the figure is equal to the area of rectangle plus the area of two semicircles

The area of rectangle is equal to

$A=14*5=70\ in^{2}$

The area of the small semicircle is equal to

$A=\pi r^{2} /2$

$r=5/2=2.5\ in$ -----> radius is half the diameter

substitute

$A=(3.14)(2.5^{2})/2=9.8125 in^{2}$

The area of the larger semicircle is equal to

$A=\pi r^{2} /2$

$r=14/2=7\ in$ -----> radius is half the diameter

substitute

$A=(3.14)(7^{2})/2=76.93\ in^{2}$

The area of the figure is equal to

$70+9.8125+76.93=156.7425=157\ in^{2}$

8 0

2 years ago

Read 2 more answers

How would the solution of the inequality 3/7 (35x - 14) ≤ 21x/2 + 3 be graphed on a number line?

Mashcka [7]

Answer it's a closed dot on positive 2 going to the left

Step-by-step explanation:

4 0

2 years ago

Using appropriate properties find. 2/5×(-3/7)-1/6×3/2+1/14×2/5

BigorU [14]

Not for sure but maybe, -0.39285714285 if it’s correct hope it helps!

7 0

2 years ago

How do I use a number line to find the indicated distance

anyanavicka [17]

2nd point distance-1st point distant

4 0

2 years ago

A seafood-sales manager collected data on the maximum daily temperature, T, and the daily revenue from salmon sales, R, using sa

konstantin123 [22]

Answer: d

Step-by-step explanation:

t= b1- B0/ SE(b1) = 2.37-0/0.65= 3.646 -> 3.65

4 0

2 years ago