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ziro4ka [17]
3 years ago
11

Plz help with this math it’s hard lol

Mathematics
2 answers:
sdas [7]3 years ago
5 0
1) x= 7/10. Y=21/5
(7/10,21/5)

2) x= 10, Y= 30
(10,30)
tankabanditka [31]3 years ago
4 0

Answer:

1.10

Step-by-step explanation:

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Twice a first number decreased by a second number is 22. The first number increased by four times the second number is - 7.
AnnZ [28]

Answer:

4

Step-by-step explanation:

8 0
3 years ago
Please explain as well 3x+5y=21 4x-2y=-244x−2y=−24
hodyreva [135]

Step-by-step explanation:

3x + 5y = 21 * (-4) •••••• -12x -20y = -84 (a)

4x - 2y = -24 * (3) •••••• 12x -6y = -72 (b)

(a) + (b)

-26y = -156

y = 6

3x + 5 * 6 = 21

3x = 21 - 30

3x = -9

x = -3

3 0
3 years ago
The Answers are:
Ainat [17]

Answer:

Step-by-step explanation:

prpobaly quadrent 4

8 0
3 years ago
Given the triangle below, answer the following:
OLEGan [10]

Answer:

Step-by-step explanation:

question no . 5

ratio of angle L

take angle as reference angle

using cos rule

cos L = base / hypotenuse

= 4/5

ratio of angle N

take angle N as reference angle

using sin rule

sin N = opposite / hypotenuse

= 4/5

for measure of angle L

cos L = 4/5

cos L = 0.8

L = cos^{-1}(0.8)

L = 36.9

for meanure of angle N

sin N = 4/5

sin N = 0.8

N = sin^{-1}(0.8)

N = 53.1

7 0
3 years ago
Read 2 more answers
A grain of rice average weight is about 25 milligrams or 0.025 grams. Which of the following shows the weight in grams in scient
zavuch27 [327]

Answer:

2.5x10⁻2

Step-by-step explanation:

4 0
3 years ago
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