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Sedbober [7]
2 years ago
9

Create three expressions that evaluate to 20.

Mathematics
1 answer:
mafiozo [28]2 years ago
4 0

Answer:

10+10

15+5

14+6

Step-by-step explanation:

like this lol

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What is the slope that is parallel to -2x + 7y = 12?
Ket [755]

Answer:

I love math anyways

The ans is in the picture with the steps how i got it

(hope it helps i plz have brainlist :D hehe)

step-by-step explanation:

6 0
3 years ago
What is the product?<br><br> (6r − 1)(−8r − 3)
xxMikexx [17]

-2r - x - 3 ............


7 0
3 years ago
Read 2 more answers
Dave can complete a sales route by himself in 4 hours. James can do the same job in 5 hours. How long will it take them to do it
Alexeev081 [22]
We can solve this problem by calculating the individual rate of working and equate it to their total rate of working.

If Dave can complete a sales route in 4 hours, then his working rate is

\frac{1}{4}

Also, if James can do it in 5 hours, then his working rate is

\frac{1}{5}

Let
x
be the hours that both will use to complete the sales route,

Then rate at which both completes this task is
\frac{1}{x}


Meaning if we add their individual rates we should get

\frac{1}{x}

That is;

\frac{1}{4} + \frac{1}{5} = \frac{1}{x}

The LCM is
20x

So let us multiply through with the LCM.

20x \times \frac{1}{4} + 20x \times \frac{1}{5} =20x \times \frac{1}{x}

5x + 4x = 20

We simplify to get,

9x = 20

Dividing through by 9 gives;

x = \frac{20}{9}

x = 2\frac{1}{9}

Therefore the two will complete sales route in
2 \frac{1}{9}
hours.
3 0
3 years ago
16. A population of bacteria increases by 30 every hour. Is this situation linear or exponential? Why?
oksian1 [2.3K]

Answer:

D. Linear, because the function increases by a common difference

Step-by-step explanation:

Since it is increasing always at the same rate it is linear.

Please mark Brainliest.

5 0
3 years ago
1. m∠QPR =<br><br> 2. m∠QTP =<br><br> 3. RP =<br> Show all the work
alex41 [277]

Answer:

1. 30°

2.90°

3. 12 units

Step-by-step explanation:

I can't believe there's nothing confirming that this is a parallelogram/a rhombus?! Assuming is awful, and I wish you could say you can't know for sure lol but for the sake of this answer, let's just call it a rhombus. (There was probably some context elsewhere that you didn't put over here, hopefully.)

1.

The reason I say this is: in a rhombus, the diagonals bisect the angles. This means that the diagonals split the angles they meet into two equal parts. That way, it would make sense. m∠QPR=m∠SPR=30°.

2.

If it is a rhombus, the diagonals are perpendicular to each other, so m∠QTP should be 90°.

3.

Diagnonals in a rhombus (and in any parallelogram) bisect each other, so PT=TR=6, and RP=PT+TR=12 units.

Sorry if this is all dreadfully wrong, and I hope I helped you!

7 0
3 years ago
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