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Lady_Fox [76]
3 years ago
8

Solve the system of linear equations using the

Mathematics
1 answer:
MArishka [77]3 years ago
8 0

Answer:

no solution

Step-by-step explanation:

y = -2x + 3

6x + 3y = -3

the substitution method means you plug one equation into the next, because the first equation gives us a solution for y we can go ahead and plug that into y of the second equation

6x + 3(-2x + 3) = -3

6x - 6x + 9 = -3

9 = -3

which is false meaning that there are no solutions and the lines don't touch at any point

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Solve the inequality 4x - 7<5
Alexandra [31]

Answer:

x ∈ (-oo ; 3)

Step-by-step explanation:

4x - 7 < 5

4x < 5 + 7

4x < 12

x < 12 : 4

x < 3

x ∈ (-oo ; 3)

8 0
3 years ago
6. Find QR, if area and altitude PS of ∆PQR are given<br> ar(∆PQR) = 180 cm2, PS = 15​
Slav-nsk [51]

Given:

Area and altitude PS of ∆PQR are ar(∆PQR) = 180cm² and PS = 15​.

To find:

The measure of side QR.

Solution:

According to the given information, PS is an altitude of ∆PQR. It means QR is the base of ∆PQR.

We know that, the area of a triangle is

Area=\dfrac{1}{2}\times Base\times Height

ar(\Delta PQR)=\dfrac{1}{2}\times QR\times PS

Substituting the given values, we get

180=\dfrac{1}{2}\times QR\times 15

180\times 2=QR\times 15

360=QR\times 15

Divide both sides by 15.

\dfrac{360}{15}=QR

24=QR

Therefore, the measure of side QR is 24 cm.

3 0
2 years ago
Can someone help on number 32 please
STatiana [176]

Answer:

b. -2.5, -\frac{5}{4}, -\frac{2}{3}, 0.75, \sqrt{3}, 1.9,  I-4I

Step-by-step explanation:

-5/4 is smaller than -2/3 since on the negative sides, any number who is larger is smaller.

0.75 is smaller than the square root of 3 since that equals to 1.7.

1.9 is smaller than the absolute value of -4 since that equals to 4.

4 0
3 years ago
Read 2 more answers
Two times the least of three consecutive odd integers exceeds three times the greatest by 15
Mariana [72]
Three consecutive odd integers would be x, x+2, and x+4 assuming x is an odd integer. The smallest of these is x. Two times x is 2x. The greatest integer is x+4. Three times this is 3 (x+4), and if you distribute you get 3x+12. If 2x exceeds this by 15, you would make it 3x+12-15. If you add the like terms, 12+(-15) is -3. So, you have 2x=3x-3. Subtract 3x from both sides. 2x-3x is -1x, or -x. Now we have -x=-3. Divide by -, or -1 on both sides. Now we have x=3. You can substitute x for 3 for any of the consecutive odd integers to find their value.
3 0
3 years ago
PLEASE ANSWER, WILL GIVE BRAINLIEST!
kumpel [21]
<h3>Answer:  b = 17</h3>

====================================================

Explanation:

The line must go through the point (5,2) which means x = 5 and y = 2 pair up together.

We'll plug these x and y values into the equation and solve for b.

y = -3x+b

2 = -3(5)+b

2 = -15+b

2+15 = b

17 = b

b = 17

The equation y = -3x+b turns into y = -3x+17

8 0
2 years ago
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