All categories

2 years ago

How do I solve this -1/2x-7=-11

Mathematics

2 answers:

tankabanditka [31]2 years ago

7 0

Answer:

Step-by-step explanation:

-1/2x -7=-11

-1/2x +4=0

4=1/2x

x=8

Snowcat [4.5K]2 years ago

5 0

Answer:

x = 8

Step-by-step explanation:

FIrst you move the constant to the right so we add 7 to -11.

Now we have -1/2x = -11+7

Add -11 and 7 which gives us -4

Now we have -1/2x = -4

Multiply both sides by -2

We end up with 8 as X

You might be interested in

You successfully completed statistics, and the Math Department Chair recruited you to be a tutor. It’s day one on the job, and y

zvonat [6]

Answer:

Step-by-step explanation:

Ok, so we have to help your pupil (lets call her Jane) figure out "why researchers should use a random sample to conduct a survey". So, i will list all of the choices.

A random sample is likely to avoid bias
In a random sample some members of the population are more likely to be selected than others
Random samples provide consistency and systematically favor one choice over every other choice in each survey question
Random sampling will provide a more representative sample of population
Researchers can use a random sample to draw conclusions about the population

Random sampling is used to get the best average, and not favor any one opinion. For example, if you were trying to figure out the daily spending budget of people, you wouldn't just go to the upper clas part with all the rich people, you would survey from all over the town to get results from all kinds of people. So, the answers are:

A random sample is likely to avoid bias (because thats exactly what they do)

Random sampling will provide a more representative sample of population (because they are designed to do that)

Researchers can use a random sample to draw conclusions about the population (thats why they take the samples)

Hope this helps

4 0

3 years ago

A bag of potatoes has a mass of 4 kilograms.Some potatoes are taken out.The mass is now 2305 grams.What is the mass of the potat

Colt1911 [192]

First, convert the kilograms to grams. One kilogram is 1000 grams. So multiply it by 1000. Then subtract 2305 from 4000. 4000-2305=1695. So 1695 grams were taken out.

5 0

3 years ago

Sam and Avery are making small and large birdhouses for an upcoming craft show. They will sell the small birdhouses for $10 and

kupik [55]

Answer:

<h2>They should make 8 small ones and 12 large ones.</h2><h2>$260 they will make in total.</h2>

Step-by-step explanation:

They want to make as much money as possible.

Small bird house gives them $10 and large birdhouse give them $15.

Avery has time to decorate 12 birdhouse of either size.

Hence, to maximize the earning, Avery should build 12 large ones.

Sam can make any of the combination below in 24 hours.

4 Large and 1 small bird house, which will make $4 \times 15 + 10 = 70$

3 Large and 3 small bird house, which will make $3 \times15 + 3 \times10 = 75$

2 Large and 4 small bird house, it will gain $2 \times15 + 4 \times10 = 70$

1 Large and 6 small bird house, it will make $1 \times15 + 6 \times10 = 75$

8 small bird house, which will gain $8\times10 = 80$

The profit will be maximize if Sam build 8 small bird houses.

Thus, they will make $80 + 12\times15 = 260$ .

5 0

3 years ago

Find surface area of the right angled triangular prism.

jeka57 [31]

A triangular prism<span> has 5 faces, 3 being rectangular and 2 being </span>triangular<span>. The </span>area<span> of the rectangular faces can be found by multiply the base and height lengths together. The </span>area<span> of the </span>triangular<span> faces can be found by multiplying the base and height and dividing by 2.</span>

6 0

2 years ago

Read 2 more answers

A company has $54,000 in a bank account that pays an interest of 2% per year. How much money can I withdraw at the end of one ye

RSB [31]

Answer:

$55,080

Step-by-step explanation:

Hope this helps.

3 0

2 years ago

Read 2 more answers