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Scorpion4ik [409]
3 years ago
10

Which expressions are equivalent to -90 - 60w? Choose three. *Hint: On each answer choice below, use the distributive property t

o decide which ones match -90-60w. Also remember that -60w-90 is equivalent to -90-60w a) -30(3 + 2w) b) (-9 − 6w) x 10 c) -3(30 - 20w) d) (6 + 4w) × 15 e) −20(4.5 + 3w)
Mathematics
1 answer:
marusya05 [52]3 years ago
5 0

Answer:

a), b), e)

Step-by-step explanation:

<em>a) -30(3 + 2w) = -90 - 60w</em>

<em>b) (-9 − 6w) x 10 = -90 - 60w</em>

c) -3(30 - 20w) = -90 + 60w

d) (6 + 4w) × 15 = 90 + 60w

<em>e) −20(4.5 + 3w) = -90 - 60w</em>

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If h(x) = 2x4 - 4x2 - 2x, then h(3)=
Kruka [31]

Answer:

h(3)=-6

Step-by-step explanation:

sub 3 into all the positions which variable X is present

h(3) =( 2 \times 4) - (4 \times 2) - 2(3)

h(3) = 8 - 8 - 6

h(3) =  - 6

6 0
2 years ago
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a train travelling at 60 km per hour completes the journey in 8 hour. How much faster would it have to travel to cover the same
antiseptic1488 [7]

Answer:

Total distance covered: 60x8 = 480

Speed needed to cover distance of 480 km in 6 hrs = 480/6 = 80 km/hr.

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Train needs to run faster with speed of 20km per hour to achieve same distance in 6 hrs.

Step-by-step explanation:

4 0
2 years ago
To add 20.4 + 3.75 + 4.25, Crystal first added 3.75 and 4.25. Which property did Crystal use to add mentally?
evablogger [386]

Answer:

Associative Property of Addition

Step-by-step explanation:

From the list of given options, option A correctly answers the question and this is because

a + b + c = a + (b + c) --- (1)

or

a + b + c = (a + b) + c --- (2)

<em>The above illustrations only apply to Associative Property of Addition</em>

In Crystal's case:

20.4 + 3.75 + 4.25 = 20.4 + (3.75 + 4.25)

This can be compared to (1) above

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<em>Option A answers the question</em>

3 0
3 years ago
Find the volume of the prism.
leonid [27]

Answer:

Step-by-step explanation:

Volume = L × W × H

Length L = 17in

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6 0
2 years ago
How can i get answer 5 for -10 - (+5) ?​
timama [110]

Answer:

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Step-by-step explanation:

- 10 - (-20 + 5)

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have a nice day and mark me brainliest! :)

4 0
3 years ago
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