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STatiana [176]
3 years ago
15

1. 5m +9n (if m= -7 and n= 4)

Mathematics
2 answers:
iren [92.7K]3 years ago
8 0

Answer:

1

Step-by-step explanation:

Evaluate 5 m + 9 n where m = -7 and n = 4:

5 m + 9 n = 9×4 - 7×5

5 (-7) = -35:

-35 + 9×4

9×4 = 36:

36 - 35

36 - 35 = 1:

Answer:  1

Lunna [17]3 years ago
3 0

Answer:

1

Step-by-step explanation:

Given

5m + 9n ← substitute m = - 7 and n = 4 into the expression

= (5 × - 7) + (9 × 4)

= - 35 + 36

= 1

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2. y = 5x2 + 10x – 3
Mice21 [21]

Answer:

x= -7/10 or x= -0.7 , y= 7

Step-by-step explanation:

Find the x-intercept:                  Find the y-intercept:

y= 5×2+10x-3                                y= 5×2+10x-3  

0=10+10x-3                                    y= 5×2+10×0-3

0=7+10x                                         y= 7

-10x=7

x=-7/10

8 0
3 years ago
P - 3.1(6) =-2.1(2) what is the answer and explained
harina [27]

Answer:

P = 14.4

Step-by-step explanation:

Multiply out -3.1(6) and -2.1(2).

P - 18.6 = - 4.2

Add - 18.6 to the other side of the Equation.

P = 14.4

4 0
3 years ago
33762 to the nearest thousand?
Reil [10]

Answer:

34,000

179,400

39,900

Step-by-step explanation:

In the number 33,762, the 3 is in the thousands place, so we look to the number behind it. If it is less than 5, we round down, and if it is more than 5 we round up.

Since 7 is more than 5, we round up, so our rounded number would be

34,000

Let’s use this logic for the rest of these numbers

179,406

4 is in the hundreds

Previous number in 0 which is less than 5, so it rounds down

179,400

39,994

9 is in the tens place

Previous number is 4 which is less than 5, so it rounds down

39,990

8 0
3 years ago
Read 2 more answers
Which list shows all the factors of 18?
Anestetic [448]

Answer:

List #2

Step-by-step explanation:

You can use a factor tree to find all the factors of 18:

18: 1x18, 2x9, 3x6 =1,2,3,6,9,18

3 0
3 years ago
Read 2 more answers
the price of a ps5 is $500 but it is sold out in stores. You can purchase one on ebay for $800. What is the percent change of th
statuscvo [17]

Answer:

beinggreat78~here~to~help!

The price increased by %60. Why? Because 160% of 500 is 800, so that must mean the percent only increased by 60.

8 0
2 years ago
Read 2 more answers
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