3 years ago

Select ALL statements that are true about the linear equation.

Mathematics

1 answer:

Yuri [45]3 years ago

4 0

The answers are 2 and 4

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What is 6x - 9 = 15?

11111nata11111 [884]

Add 9 to both sides and you get 6x=24 then you divide 6 from both sides to get x by its self and the final answer will be 4

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3 years ago

What is the percent for 10.44?

e-lub [12.9K]

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3 years ago

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poizon [28]

Angle MNP is correspondent to angle LKI

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3 years ago

Find<br>a,b<br>such<br>that 7.2, a, b, 3 are in A.P.

leonid [27]

Answer:

The value of a = 5.8

The value of b = 4.4

Step-by-step explanation:

Given

7.2, a, b, 3 are in A.P

$2a = 7.2+b$

$b = 2a - 7.2$

a, b, 3 are also in A.P

$2b\:=\:a\:+\:3$

Putting $b = 2a - 7.2$

$2\left(2a-7.2\right)=a+3$

$4a-14.4=a+3$

$\mathrm{Add\:}14.4\mathrm{\:to\:both\:sides}$

$4a-14.4+14.4=a+3+14.4$

$4a=a+17.4$

$4a-a=a+17.4-a$

$3a=17.4$

$\mathrm{Divide\:both\:sides\:by\:}3$

$\frac{3a}{3}=\frac{17.4}{3}$

$a=5.8$

Now, plugging $a=5.8$ in $b = 2a - 7.2$

$b=2\left(5.8\right)-7.2$

$b=2\cdot \:5.8-7.2$

$b=11.6-7.2$

$b=4.4$

Therefore,

The value of a = 5.8

The value of b = 4.4

4 0

3 years ago

Question #7multiplechoice score: in a certain candy store, 3 pounds of candy and 2 pounds of mints cost $10.80, and 1 pound of c

irga5000 [103]

Let the cost of one pound of candy be x and one pound of mint be y.

3x+2y=10.8 a
x+3y = 5.35 b
B*3 = 3x+9y = 16.05 b

b-a = 7y = 16.05-10.8= 5.25
y = 5.25/7 = 0.75

The cost per pound of mints is $0.75

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3 years ago