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kykrilka [37]
4 years ago
7

Solve 2x+y=10 4x+7=40

Mathematics
2 answers:
natita [175]4 years ago
6 0
2x+y=10
4x+7y=40
use the elimination property.
1st, -2(2x+y=10) to get :
-4x-2y=-20 
4x+7y=40
5y=20 
y=4
then plug back to one of the equations for ex: 4x+7(4)=40 then solve it
and x = 3 so the point is (3,4)


WITCHER [35]4 years ago
5 0
2x + y = 10 is y = -2x + 10
4x + 7 = 40
     -7       -7
4x = 33
4      4
x = 8.25 
y = -2(8.25) + 10 
y = -6.5 and x = 8.25

 Hope this helps :)
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A. 5x - 2 = 8<br>b. 4x - 3= 2x + 9<br>C. 6x + 3 = 2x + 8​
Elena L [17]

Answer:

a) x=2

b)x=12

c)x=5/4

Step-by-step explanation:

a)5x-2=8

5x=8+2

5x=10

x=2

b)4x-3=2x+9

4x-2x=9+3

2x=12

x=6

c)6x+3=2x+8

6x-2x=8-3

4x=5

x=5/4

Proof:

a)5x-2=8

5(2)-2=8

10-2=8

8=8

b)4x-3=2x+9

4(12)-3=2(12)+9

48-3=24+9

45=45

c)6x+3=2x+8

6(5/4)+3=2(5/4)+8

30/4+3=10/4+8

15/2+3=5/2+8

10.5=10.5

Hope this helps ;) ❤❤❤

4 0
3 years ago
Let f(x)=3x^2+2.
Leona [35]
You would multiply it by 4
4(3x^2 +2 )
12x^2 +8
6 0
3 years ago
What is the meaning of numerical form?
kozerog [31]
Numerical form is an actual number as opposed to a word. 

"Seven" is not numerical form. 
"7" is numerical form.
6 0
3 years ago
Read 2 more answers
How do I solve 6/2 + 8/3
Xelga [282]

Answer:

The solved given fractional expression is \frac{17}{3}

Therefore the given fractional expression becomes

\frac{6}{2}+\frac{8}{3}=\frac{17}{3}

Step-by-step explanation:

Given fractional expression  is  \frac{6}{2}+\frac{8}{3}

To solve the given fractional expression as below :

\frac{6}{2}+\frac{8}{3}

=3+\frac{8}{3}

 =\frac{3\times 3+8}{3}

( here taking the term 3 as LCM )

=\frac{9+8}{3}  ( by adding the sums here )

=\frac{17}{3}

\frac{6}{2}+\frac{8}{3}=\frac{17}{3}

Therefore the solved  given fractional expression  is  \frac{17}{3}

Therefore the  given  fractional  expression becomes  

\frac{6}{2}+\frac{8}{3}=\frac{17}{3}

The solved  given fractional expression  is  \frac{6}{2}+\frac{8}{3}=\frac{17}{3}

7 0
3 years ago
Did the first one need help with the last few
Otrada [13]

Hi there! :)

a) (ii) The two angles are vertical angles, so they are congruent.

b)(i) y = 71°

  (ii) The two angles are alternate interior angles, so they are congruent.

c) z = 44°

(ii) m∠x = 65° because the two angles are vertical angles, so they are congruent.

b) (i)

∠y is an alternate interior angle, therefore:

m∠y = 71°

c) Use the sum of interior angles of a triangle to determine the measure of angle z:

180 = 65 + 71 + z

180 = 136 + z

180 - 136 = z

z = 44°.

7 0
3 years ago
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