All categories

3 years ago

Does anyone know how to do these? I'm having a hard time and you guys are very helpful.

Mathematics

2 answers:

Keith_Richards [23]3 years ago

6 0

4z - 1 ( for now skip the z part) = 3z.

3z times 2 = 6z

Now on the other side, add the 3 outside of the parentheses to the 2 on the inside... you'll get 5 + z

To make each side equal... 5 + ? = 6

Obviously 1... So z = 1

n200080 [17]3 years ago

4 0

Ok so keep in mind, we are solving for x or z. We want to get it by itself.

So, with 6x= 5x+22, we need to subtract 5x from both sides of the = sign

So 6x - 5x = 1x.

Our new equation looks like 1x= 22

We still don't have x alone so we need to divide one on both sides of the =

Our new and final answer is x=22

You might be interested in

A consumer shops for a sofa. The store is having a 20% off sale on all furniture. What is the discounted, pre- tax cost of a sof

lakkis [162]

Answer:
The answer is 408

Explanation:
20% of 510 is 102 and 510 - 102 is 408

8 0

2 years ago

The sum of 2 numbers is 20 and their product is 90. What are the two numbers? (Note: Write the smaller number first.)

DIA [1.3K]

The two numbers are 8 and 12.

When added, you get a sum of 20.

When multiplied, you get a product of 96.

4 0

2 years ago

Which expression is equivalent to x y Superscript two-ninths?

crimeas [40]

Option D: $x\sqrt[9]{y^2}$ is the expression equivalent to $xy^{\frac{2}{9}}$

Explanation:

Option A: $\sqrt{xy^9}$

The expression can be written as $({xy^9})^{\frac{1}{2}$

Applying exponent rule, we get,

$x^{\frac{1}{2}} y^{\frac{9}{2}}$

Thus, the expression $\sqrt{xy^9}$ is not equivalent to the expression $xy^{\frac{2}{9}}$

Hence, Option A is not the correct answer.

Option B: $\sqrt[9]{xy^2}$

The expression can be written as $({xy^2})^{\frac{1}{9}$

Applying exponent rule, we get,

$x^{\frac{1}{9}} y^{\frac{2}{9}}$

Thus, the expression $\sqrt[9]{xy^2}$ is not equivalent to the expression $xy^{\frac{2}{9}}$

Hence, Option B is not the correct answer.

Option C: $x\sqrt{y^9}$

The expression can be written as $x(y^9)^{\frac{1}{2} }$

Applying exponent rule, we get,

$x y^{\frac{9}{2}}$

Thus, the expression $x\sqrt{y^9}$ is not equivalent to the expression $xy^{\frac{2}{9}}$

Hence, Option C is not the correct answer.

Option D: $x\sqrt[9]{y^{2} }$

The expression can be written as $x(y^2)^{\frac{1}{9} }$

Applying exponent rule, we get,

$xy^{\frac{2}{9}}$

Thus, the expression $xy^{\frac{2}{9}}$ is equivalent to the expression $xy^{\frac{2}{9}}$

Hence, Option D is the correct answer.

4 0

3 years ago

Read 2 more answers

. Write 12 as a percent.

Burka [1]

Answer:

1200%

Step-by-step explanation:

12 = 12.

To convert to percent, bring decimal back 2 places

It becomes 1200%

7 0

3 years ago

Read 2 more answers

Parallel, intersecting or skew?

const2013 [10]

Two lines are:

Parallel if they don't intersect and lie on the same plane
Intersecting if...well, they intersect at one point
Skew if they don't intersect and they lie on two different planes

So, we have:

AB and BC intersect at point B
AE and BF don't intersect, but both lie on the plane AEFB
EF and AD don't intersect and don't lie on a common plane
ABC and ABF intersect on segment AB
AED and BFC are parallel (they're both perpendicular to plane ABC)

7 0

2 years ago