2 years ago

Can someone please check my answer?!

Mathematics

1 answer:

maksim [4K]2 years ago

3 0

I think that’s the correct one:)

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(-6x3-4x2-8)+(x3-x2-9x+4) add together and simply

Aleksandr [31]

Answer:

-5x³ -5x² -9x - 4

Step-by-step explanation:

(-6x³-4x²-8)+(x³-x²-9x+4)

Add the like terms.

-6x³ and x³ are like terms. -6x³ + x³ = -5x³

-4x² and -x² are like terms. -4x² - x² = -5x²

-8 and 4 are like terms. -8 + 4 = -4

-6x³-4x²-8 +x³-x²-9x+4 = -5x³ -5x² -9x - 4

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2 years ago

The local hardware store wants to increase their inventory. last year 15 electric screwdrivers cost them $300. at the same cost,

VMariaS [17]

Answer:

Cost of 45 screwdrivers will be = $900

Step-by-step explanation:

Last year 15 electric screwdrivers cost to the local hardware store = $300

So per screwdriver cost = $\frac{\text{Total cost}}{\text{Total number of screw drivers}}$

= $\frac{300}{15}$

= $20

Now we have to calculate the cost of 45 screw drivers.

Since cost of 1 screwdriver = $20

So cost of 45 screwdrivers = 20×45 = $900

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3 years ago

What are the solutions to the system of equations graphed

sweet-ann [11.9K]

Answer:

The point of intersection between the 2 graphs.

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2 years ago

find each unit rate round to the nearest hundredth if necessary on a hundred and $140 for 18 ft squared

Marina86 [1]

Divide both by 18.
<span>140/18=7.78 </span>

<span>So... $7.78 per foot</span>

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3 years ago

Which is the slope of the line that passes through the points (3,17) and (7,25)? a slope = 1/2 b slope = 2 c slope = −2 d slope

Ierofanga [76]

Slope is y2-y1/x2-x1
so, 25-17/7-3
8/4=2
The answer should be b

5 0

2 years ago