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4 years ago

What is the value of y in the equation 4 + y = −3? 7 1 −1 −7

Mathematics

2 answers:

Viefleur [7K]4 years ago

8 0

Answer:

-7

Step-by-step explanation:

4 + y = -3

-4 + 4 + y = -3 - 4

y = -7

Natasha_Volkova [10]4 years ago

6 0

Answer:

-7 is your answer

Step-by-step explanation:

Isolate the variable, y. Note the equal sign, what you do to one side, you do to the other.

4 + y = -3

Subtract 4 from both sides

4 (-4) + y = -3 (-4)

y = -3 - 4

y = -7

-7, or (D) is your answer

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Solve for all values of x by factoring.<br> x^2 + 4x – 30 = -3x

vichka [17]

Answer:

${x}^{2} + 4x - 30 = - 3x \\{x}^{2} + 7x - 30 = 0 \\ {x}^{2} - 3x + 10x - 30 = 0 \\ x(x - 3) + 10(x - 3) = 0 \\ (x - 3)(x + 10) = 0 \\ \boxed{x = 3} \\ \boxed{x = - 10}$

<h3><em><u>x=3 or x=-10</u></em> is the right answer.</h3>

7 0

3 years ago

Please Help! Look at attachments.

marshall27 [118]

Answer:

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Step-by-step explanation:

4 0

3 years ago

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liberstina [14]

Answer:

True

Step-by-step explanation:

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8 0

3 years ago

PLEASE HELP!!! Find the values of x and y for which the lines are parallel.

Alika [10]

Answer:

x = 68

y = 72

Step-by-step explanation:

if the lines are parallel, then x-3 = 65

x = 68

(68 - 3) + 46 + y - 3 = 180

y = 72

7 0

3 years ago

Paul, Joey, and Matt have to catch the train back to school at 5:00pm. They want to tour the air and space museum for 1 hour and

Zigmanuir [339]

Answer:

2:25pm

Step-by-step explanation:

The time given is 5pm to catch the train back to school;

Amount of time for the tour = 1hr 45min

= 105min

Amount of time at gift shop = 30min

Amount of time to save = 20min

Total time = 105min + 30min + 20min = 155min

So;

Total time = 2hr 35min

So;

5pm - 2hr 35min = 2:25pm

3 0

3 years ago