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Ber [7]
3 years ago
14

6x-4y=-15 and x-4y=1

Mathematics
1 answer:
Harlamova29_29 [7]3 years ago
4 0

Answer:

The solution to the given system of equations is

(-\frac{16}{5},-\frac{21}{20})

Step-by-step explanation:

Given system of equation are

6x-4y=-15\hfill (1)

x-4y=1\hfill (2)

To solve equation by using elimination method

Now subtracting equations (1) and (2)

6x-4y=-15

x-4y=1

_________________

5x=-16

x=-\frac{16}{5}

Substitute x=-\frac{16}{5}  in equation (1)

6(-\frac{16}{5})-4y=-15

-\frac{96}{5}-4y=-15

-4y=-15+\frac{96}{5}

-4y=\frac{21}{5}

y=-\frac{21}{20}

Therefore the solution is

(-\frac{16}{5},-\frac{21}{20})

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Given that angle a = 72° and angle b = 37°, work out x.
Sedbober [7]

Answer:

x is 71

Step-by-step explanation:

X + 72 + 37 = 180 ( Sum of angles in a triangle)

X = 180 - 72 - 37

X = 71

8 0
2 years ago
Could someone please help? Maybe with an explanation? Thank you :)
goblinko [34]
The first one because angle one is the same degrees as angle 8, which proves why p is parallel to q
6 0
4 years ago
3 x one half<br><br><br> three halves<br><br> five sixths<br><br> one sixth<br><br> one half
fomenos

Answer:

three halves

Step-by-step explanation:

1/2 * 3 = 3/2 = 1 1/2 = 1.5

Multiple: 1/2 * 3 = 1 · 3/2 · 1 = 3/2

Multiply both numerators and denominators. Result fraction keep to lowest possible denominator GCD(3, 2) = 1. In the following intermediate step, it cannot further simplify the fraction result by canceling.

In other words - one half multiplied by three = three halfs.

3 0
2 years ago
Megan and Heidi are making cookies for an upcoming bake sale. Megan is making chocolate chip cookies and Heidi is making sugar c
koban [17]

Answer:

Heidi (260 cookies)

Step-by-step explanation:

Megan's equation is given as y=8x, where x is the number of bags, and y the number of cookies:

#First calculate Heidi's total number of bags, cookies and cookies:

H_b=\sum{bags}\\\\=10+12+14+16\\\\=52 \ bags\\\\H_c=\sum{cookies}\\\\=50+60+70+80\\\\=260 \ cookies

#Given that both Heidi and Megan make the same number of bags of cookies, Megan's cookies totals to:

H_b=M_B=52 \ Bags\\\\M_c=y=8x, x=52\\\\y=8\times 52\\\\=416\\

Hence, Megan makes 416 cookies.

#From our calculations:

416>260\\\\M_c>H_c

Hence, Heidi makes the least number of cookies(260 cookies) compared to Megan's 416 cookies.

7 0
3 years ago
What is the solution to the given inequality?
SashulF [63]

1/2 - 1/4x ≥ -1/4

Combine 1/4x to get x/4:

1/2 - x/4 ≥ -1/4

Subtract 1/2 from both sides:

-x/4 ≥ -1/4 - 1/2

Simplify:

-x/4 ≥ -3/4

Multiply both sides by 4:

-x ≥ -3/4 * 4

-x ≥ -3

Multiply each side by -1 ( and since you are multiplying by -1, you also need to reverse the inequality sign)

Answer: x ≤ 3

5 0
3 years ago
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