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garri49 [273]
3 years ago
13

PLEASE PLEASE HELP Write a fact family for 2, −5, and −10.

Mathematics
1 answer:
NeX [460]3 years ago
8 0

Answer and explanation:

To find : Write a fact family for 2, −5, and −10 ?

Solution :

A fact family is a group of math facts using the same numbers.

In the case of multiplication and division, we bring number together to get the product or divisor.

For 2, −5, and −10

The fact family are,

2\times -5=-10

\frac{-10}{-5}=2

\frac{-10}{2}=-5

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Solve for x. 1/15+x=3/10
ValentinkaMS [17]

Answer:

x=7/30

Step-by-step explanation:

3/10-1/15

7 0
3 years ago
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Find the equation of the line through the given pair of points. (-7,-6) and (-4,9)
Softa [21]

Answer:

y=5x+29

Step-by-step explanation:

1. find slope

y2-y1/x2-x1

9--6/-4--7= 15/3=5

2. substitute x and y

(-4, 9)= 9=5(-4)+b

            9=-20+b

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3. put it together

y=5x+29

6 0
3 years ago
Question 13
Mrac [35]

Answer:

71.6 degrees

Step-by-step explanation:

Given the vectors

u= <8,4> v = <9.-9> (5 points)

u*v = (8, 4)*(9, -9)

u*v = 8(9)+(4)(-9)

u*v = 72 - 36

u*v = 36

|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+9²

|v|  = √81+81

|v|  = √162

Using the formula

u*v = ||u||v| cos theta

36 = √80(√162)cos theta

36 = √12960 cos theta

cos theta = 36/√12960

cos theta = 36/113.8

cos theta = 0.3162

theta = arccos(0.3162)

theta = 71.56 degrees

Hence the angle between the given vectors to the nearest tenth of a

degree is 71.6 degrees

5 0
2 years ago
Bunty goes 500 km from Delhi towards East direction. Bubly goes 200 km for Delhi towards
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Answer:

700 km

Step-by-step explanation:

Distance covered by Bunty = 500 km

Distance covered by Bubbly = 200 km

Displacement between them = 500 + 200 km = 700 km

This means Bubbly has to cover a distance of 700 km to reach Bunty.

8 0
2 years ago
A reel of electrical cable holds 80 metres when full.
kaheart [24]
I3/I6(8O)= 65m of electrical cable left
6 0
3 years ago
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