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2 years ago

Is this true or false need answer asap

Mathematics

1 answer:

VLD [36.1K]2 years ago

3 0

Answer: True

Step-by-Step Explanation:

=> 2x + 3y = -7 (Eq. 1)
=> -x = 2y (Eq. 2)
=> x = 1, y = -3

Substitute values of ‘x’ and ‘y’ in Eq. 1 :-

=> 2x + 3y = -7
= 2(1) + 3(-3) = -7
= 2 + -9 = -7
=> -7 = -7
=> LHS = RHS

Therefore, it is a Solution.

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You are making 6 quarts of

Ivenika [448]

1.5 quarts of 20% fruit juice and 4.5 quarts of 100% fruit juice.

Step-by-step explanation:

Let x be the number of quarts of 100% fruit juice

Let y be the number of quarts of 20% fruit juice

The equation for amount of quarts is ;

x+y=6

x=6-y-------------------equation 1

The equation for the amount of quarts of fruit juice to get 80% fruit juice will be;

x(100%)+y(20%)=80%------however you need to make 6 quarts so divide first portion of equation by 6

{x(100%)+y(20%) }/6=80%

Multiply both parts of the equations by 6

x(100%)+y(20%)=480% --------------equation 2

Use equation 1 in 2

(6-y)(100%)+y(20%)=480%

600-100y+20y=480

600-80y=480

600-480=80y

120=80y

120/80 =y

1.5=y

Use the value of y in equation 1

x=6-y , x= 6-1.5=4.5

So you have,

1.5 quarts of 20% fruit juice and 4.5 quarts of 100% fruit juice.

Learn More

Mixtures equations;brainly.com/question/11898822

Keywords : quarts,party,bottles,punch

#LearnwithBrainly

6 0

3 years ago

Rewrite these in increasing order of length: 228 dm, 517 cm, 787 km, 4 m

vichka [17]

Answer: The correct order

8mm, 41 cm, 790 dm, 788m, 537 km

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

I need to know the answer

KiRa [710]

Answer:

n = -4

Step-by-step explanation:

6n + 9 = -3n - 21 - 6

combine like tmers:

6n + 9 = -3n - 27

add 3n to both sides:

9n + 9 = -27

subtract 9 from both sides:

9n = -36

divide by 9:

n = -4

3 0

4 years ago

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Write the equation of the line in Point-Slope Form given the information below. Use Point One. point 1=(-1,-1) Point 2-(0,4)

netineya [11]

Answer:

$\bold{y+1=5(x+1)}$

Step-by-step explanation:

$m=\dfrac{y_2-y_1}{x_2-x_1}\\\\(-1,\,-1)\ \implies\ x_1=-1\,,\ y_1=-1\\(0,\,4)\ \implies\ x_2=0\,,\ y_2=4\\\\m=\dfrac{4-(-1)}{0-(-1)}=\dfrac{5}{1}=5$

$y-y_1=m(x-x_1)$ - point-slope form of Equation of the Line

$x_1=-1\,,\ y_1=-1\,,\ m=5\\\\equation:\\{}\qquad\qquad y-(-1)=5\big(x-(-1)\big)\\\\{}\qquad\qquad y+1=5\big(x+1\big)$

6 0

3 years ago

to shift the graph of an equation some numbers of units to the ___, you add that number to each graph

solmaris [256]

Answer:

Step-by-step explanation:

Given

y = f(x), then

y = f(x ± a) is a horizontal translation of a units

• If f(x + a) then shift of a units left ←

• If f(x - a) then shift of a units right →

3 0

3 years ago

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