All categories

3 years ago

Four times a number decreased by twice the number 100. What is the number?

Mathematics

1 answer:

mestny [16]3 years ago

4 0

Let X= the number
4X-200
4X=200
X=50
i think that's the answer

You might be interested in

Suppose the volume of a cylinder is 169.65 ft cubes and the height is twice the radius what is the radius of the cylinder.

Delvig [45]

Answer:

The radius of the cylinder is $r=3\ ft$

Step-by-step explanation:

we know that

The volume of the cylinder is equal to

$V=\pi r^{2} h$

we have

$V=169.65\ ft^{3}$

$h=2r\ ft$

assume

$\pi=3.14$

substitute the values and solve for r

$169.65=(3.14)r^{2} (2r)$

$169.65=(6.28)r^{3}$

$r^{3}=169.65/(6.28)$

$r=3\ ft$

3 0

3 years ago

The furniture store sells dining room tables and chairs. single chairs for particular table sell for 75.00 each. the cost for fo

d1i1m1o1n [39]

Answer:

B, 33%

Step-by-step explanation:

Let us find the original price of four chairs without the special deal, and compare it with the deal to find the percent savings.

Step 1:

A customer must buy 4 chairs costing $75 each to recieve the deal. Let us multiply 4 by 75 to find the total cost without the deal:

$4*75=\\300$

Step 2:

We now know the original cost of the 4 chairs, and the price of 4 chairs with a deal. Let us subtract the difference of costs and convert it into a percentage to find percent savings:

$300-200=100\\\frac{100}{300} =\frac{1}{3}$

$\frac{1}{3}=33$ %

Therefore, B, the percent savings is 33%.

I hope this helps! Let me know if you have any questions :)

3 0

2 years ago

Given that tan2theta=3/8,what is the value of sec theta

frez [133]

There's an identity

sec^2 x = 1 + tan^2 x

so here we have

sec^2 theta = 1 + (3/8)^2 = 73/64

sec theta = sqrt 73 / 8 or 1.068 to nearest thousandth

4 0

3 years ago

What is 12-11a=45 What is a? 100 points

Lelu [443]

Answer:

a=-3

Step-by-step explanation:

-11a=45-12

-11a=33

a= -33/11

a=-3

3 0

3 years ago

Read 2 more answers

If angle 7 has a measure of 135° in the given diagram, what is the measure of angle 6

ivann1987 [24]

135. They both have the same “size”, and are called vertical angles

6 0

2 years ago