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photoshop1234 [79]
3 years ago
14

Why is the simplified value of the expression below? -8*(-3)

Mathematics
1 answer:
kirill115 [55]3 years ago
8 0
When you multiply two numbers which have the same sign the answer is positive. Therefore multiply eight and three to get 24 and the answer is positive; therefor the answers 24.
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which statement is true about the equations –3x 4y = 12 and x1/4 – 1/3y = 1? the system of the equations has exactly one solutio
finlep [7]
If you would like to solve the system of equations, you can do this using the following steps:

-3x + 4y = 12
x * 1/4 - 1/3 * y = 1 ... x * 1/4 = 1 + 1/3 * y ... x = 4 + 4/3 * y
_____________
<span>-3x + 4y = 12
</span>-3 * (4 + 4/3 * y) + 4y = 12
-12 - 4y + 4y = 12
-12 = 12
-12 - 12 = 0
-24 = 0

The correct result would be: <span>the system of the equations has no solution; the two lines are parallel.</span>
4 0
3 years ago
Use the slope-intercept form to Graph y=-1/8x+2
noname [10]

Step-by-step explanation:

This is a straight line equation. We only need two points to draw a straight line.

Choose two different numbers, put them into the equation instead of x, and calculate the value of y.

y=-\dfrac{1}{8}x+2

for x = 8

y=-\dfrac{1}{8}\cdot8+2=-\dfrac{8}{8}+2=-1+2=1

<h2>(8, 1)</h2>

for x = -8

y==-\dfrac{1}{8}\cdot(-8)+2=\dfrac{8}{8}+2=1+2=3

<h2>(-8, 3)</h2>

Mark the points in the coordinate system and draw a straight line through the given points.

<em>(look at the attachment)</em>

4 0
3 years ago
How many 1/2 cup servings are in the 7/8 cups of peanut butter
Sunny_sXe [5.5K]
This is more or less how you write the question.
\frac{ \frac{7}{8} } { \frac{1}{2} }

To solve it invert the 1/2 and multiply.
\frac{7 * 2}{8 * 1}

Which gives you 14 /8 whis is 1 3/4 cups.
8 0
3 years ago
In the △PQR, PQ = 39 in, PR = 17 in, and the altitude PN = 15 in. Find QR.
Licemer1 [7]

Answer:

So, this triangle PQR can be broken into two right triangles, PNQ and PNR, with legs PQ = 39, PN =15, and QN = ? and PR = 17, PN = 15, and NR =? respectively.


Let's solve for what is easier first:

Since we know that 5-15-17 is a Pythagorean triplet, we can infer that NR is 5....like I said earlier, it is a right triangle, so this guess holds true.


Here comes the interesting part:

Now, we have one part of QR, which is QN.

The other part can be solved by using the Pythagorean theorem.

It is (39^2-15^2)^(1/2)..which gives you 36, the square root of 1296, which happens to be the difference between the squares of 15 and 39.

SO, QR = QN + NR

5+36 = 41

QR = 41.

Hope this helps!

3 0
3 years ago
Read 2 more answers
880 ounces= How many pounds?
Vilka [71]

Answer:

55

Step-by-step explanation:

brainliest

4 0
2 years ago
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