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3 years ago

please help me i need to submit my math test on 9:49am please help me i really really need help please

Mathematics

1 answer:

ad-work [718]3 years ago

6 0

It should be a 100 degree angle as well.

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3(-2x-7)=15 please show the work

bija089 [108]

Answer:

3(-2x-7) = 15

-6x-21=15

-6x=-6

x=1

5 0

4 years ago

Can smbdy help me???

Sergio [31]

9514 1404 393

Answer:

a. One solution

Step-by-step explanation:

These are two linear equations with different x-coefficients. They have one solution.

Additional comment

If the x-coefficients are the same, the system may have 0 or infinite solutions, depending on the constants. It is not possible for a system of linear equations to have exactly two solutions.

3 0

3 years ago

Find the slope of the line 8x-2y=11

Alex777 [14]

The slope equals to 4

By rearranging the equation to be this : y=4x-5.5

6 0

3 years ago

What is the answer to 7.5+(4.8+9.9)=

kkurt [141]

First you do the 4.8 + 9.9.
This equals 14.7
then you add 14.7 to the 7.5.
You get 22.2.
There is your answer!

6 0

3 years ago

Read 2 more answers

The time, t, required to travel a fixed distance varies inversely as the

Lemur [1.5K]

You must travel at 42 mph for 4 hours

Solution:

Time varies inversely as rate of motion

Let "t" be the time required

Let "r" be the rate of motion

Then, we get

$t \propto \frac{1}{r}\\\\t = k \times \frac{1}{r}\\\\t = \frac{k}{r} -------- eqn 1$

Where, "k" is the constant of proportionality

You travel 3 hours at a rate of 56 mph

Substitute t = 3 and r = 56 in eqn 1

$3 = \frac{k}{56}\\\\k = 3 \times 56\\\\k = 168$

Find the rate you must travel for 4 hours

r = ? and t = 4

Substitute t = 4 and k = 168 in eqn 1

$4 = \frac{168}{r}\\\\r = \frac{168}{4}\\\\r = 42$

Thus you must travel at 42 mph for 4 hours

4 0

4 years ago