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3 years ago

Simplify 4y+6x-3(x-2y)

Mathematics

2 answers:

STALIN [3.7K]3 years ago

8 0

Answer:

10y + 3x

Step-by-step explanation:

(4y + 6x) - 3 • (x - 2y)

AveGali [126]3 years ago

8 0

Answer:

I think it's 10y+3x

Step-by-step explanation:

I search it up :(

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Solve by elimination:<br> 4x+9y=28<br> -4x-y=-28

nikdorinn [45]

Step-by-step explanation:

4x+9y=28

-4x-y=-28

8y=0

divide both side by 8

y=0

solve for X in equation 1

4(X)-9(0)=28

4x-0=28

4x =28

divide both side by 4

4x/4=28/4

X= 7

y=0,x=7

4 0

3 years ago

If JKLM is a rhombus, MK = 30, NL = 13, and mZMKL = 41°, find each measure.

oksian1 [2.3K]

Answer:

$NK = 15$

$JL = 26$

$KL = 19.85$

$\angle JKM =49$

$\angle JML =41$

$\angle MLK = 90$

$\angle MNL =90$

$\angle KJL =41$

Step-by-step explanation:

Given

$MK = 30$

$NL = 13$

$\angle MKL = 41$

Solving (a): NK

MK is a diagonal and NK is half of the diagonal. So:

$NK = \frac{1}{2} * MK$

$NK = \frac{1}{2} * 30$

$NK = 15$

Solving (b): JL

JL is a diagonal, and it is twice of NL.

$JL = 2 * NL$

$JL = 2 * 13$

$JL = 26$

Solving (c): KL

To solve for KL, we consider triangle KNL where:

$\angle KNL = 90$

and

$KL^2 = NL^2 + NK^2$

$KL^2 = 13^2 + 15^2$

$KL^2 = 394$

$KL = \sqrt{394$

$KL = 19.85$

Solving (d - h):

To do this, we consider triangle JKN

$\angle KNL = \angle LNM = \angle MNJ = \angle JNK = 90$ -- diagonals bisect one another at right angle

Alternate interior angles are equal. So:

$\angle MKL = \angle KMJ = \angle KJL = \angle JLM = 41$

Similarly:

$\angle MKJ = \angle KML = \angle MJL = \angle JLK = 90 - 41$

$\angle MKJ = \angle KML = \angle MJL = \angle JLK = 49$

So:

$\angle JKM =49$

$\angle JML =41$

$\angle MLK = \angle MLJ + \angle JLK$

$\angle MLK = 49 + 41$

$\angle MLK = 90$

$\angle MNL =90$

$\angle KJL =41$

5 0

3 years ago

In your biology class, your final grade is based on several things: a lab score, scores on two major tests, and your score on th

Serggg [28]

Answer:

The weighted average is of 69.94.

Step-by-step explanation:

Weighted average:

The weighed average is found multiplying each grade by its respective weight.

The grades, and weights are:

67 on the lab, with a weight of 23% = 0.23

69 on the first major test, with a weight is 21.5% = 0.215

85 on the second major test, with a weight is 21.5% = 0.215.

63 on the final exam, with a weight of 34% = 0.34.

Weighted average:

$A = 0.23*67 + 0.215*69 + 0.215*85 + 0.34*63 = 69.94$

The weighted average is of 69.94.

8 0

3 years ago

What is the area of this figure? I give brainliest and thanks :)

Alex777 [14]

Answer:

591 square cm

Step-by-step explanation:

25 times 23 =575

4 times 4 =16

575 plus 16=591

6 0

3 years ago

Read 2 more answers

5x - 10 + 65 = 90 what is the value of x?

ki77a [65]

Answer:

x =7

Step-by-step explanation:

Solve for x:

5 x - 10 + 65 = 90

Add like terms. 65 - 10 = 55:

5 x + 55 = 90

Subtract 55 from both sides:

5 x + (55 - 55) = 90 - 55

55 - 55 = 0:

5 x = 90 - 55

90 - 55 = 35:

5 x = 35

Divide both sides of 5 x = 35 by 5:

(5 x)/5 = 35/5

5/5 = 1:

x = 35/5

The gcd of 35 and 5 is 5, so 35/5 = (5×7)/(5×1) = 5/5×7 = 7:

Answer: x = 7

5 0

3 years ago

Read 2 more answers

Simplify 4y+6x-3(x-2y)​

Simplify 4y+6x-3(x-2y)