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raketka [301]
3 years ago
12

Find the value of 3x + 4y when x = -2 and y = 4

Mathematics
2 answers:
Natali [406]3 years ago
8 0
3*-2+4*4
-6+16
10 
hope that helps
lord [1]3 years ago
3 0
-6x+16y................
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(HELP) what is 10 1/2 ÷ 9 2/6 = ? (show ur work)
Readme [11.4K]

Answer:

9/8 or 1.125

Step-by-step explanation:

10 1/2 ÷ 9 2/6

= 21/2 ÷ 56/6

= 9/8

= 1.125

=》 See the attachment.

Hope it helps ⚜

8 0
2 years ago
Read 2 more answers
Fin the sum -11 + (-6) =
lesantik [10]
It is - 16 because adding two negatives give you a negative
7 0
3 years ago
An inspector checks 98 cell phones and finds 2 of them not working. If a company
insens350 [35]

Answer:

17

Step-by-step explanation:

Use ratio method

98:2

850:x

so, x = (850 x 2) divided by 98 = 17.3469388

Round it to nearest whole number = 17

8 0
3 years ago
samantha threw an apple out of a window from the tenth floor of her appartment building. the equation y = -16t^2+120 can be used
ella [17]
Answer:
time taken = 2.74 seconds

Explanation:
We are given that:
y = -16t² + 120 models the situation where:
y is the floor number
t is the time taken for the apple to hit the ground

We are also given that the floor number (y) is 10. Therefore, all we have to do is substitute with y in the above equation and solve for the time t as follows:
y = -16t² + 120
10 = -16t² + 120
120 - 10 = 16t² 
110 = 16t²
t² = 110/16
t² = 6.875
either t = 2.74 seconds ..........> accepted
or t = -2.74 seconds .........> rejected as time cannot be in negative

Hope this helps :)
5 0
3 years ago
If a cross-country runner runs a 55 kilometer (km) race, how many miles is that? Round your answer to one decimal place.
prohojiy [21]

Answer: 34.2

For everyone 1 kilometer=.621371 so if you times that by 55 you get 34.1754 which rounds to 34.2

5 0
3 years ago
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