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3 years ago

-3x-y=9

Mathematics

1 answer:

Lina20 [59]3 years ago

4 0

Answer:

D: no solution

...because none of the answers work for both of the equations when you plug in the x and y values

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Please help me out :))

mario62 [17]

Answer:

144

Step-by-step explanation:

It rotates out of 360 degrees, and since it is a pentagon that rotates from two of its vertices, then 360/5 would give us the amount it is rotating from one vertice. So 72. Then multiply it by two because you are moving from e to b.

144

8 0

3 years ago

A car travels 60 miles due north then makes a turn due west. It travels 72 miles west. How far is the car from its starting poin

Harlamova29_29 [7]

Answer:

93.7 miles

Step-by-step explanation:

This problem can be represented as a right angled triangle. The distance between the final point and the starting point is the hypotenuse.

We need to find the hypotenuse. We can use Pythagoras rule:

$hyp^2 = opp^2 + adj^2$

where opp = opposite side to the angle considered

adj = adjacent side to the angle considered

This implies that:

$x^2 = 60^2 + 72^2\\\\x^2 = 8784\\\\x = \sqrt{8784} \\\\x = 93.7 miles$

The car is 93.7 miles far from its starting point.

6 0

3 years ago

The product of a number and -7 is at most -70. what is inequality 18 points

zimovet [89]

Answer:

Inequality :

$-7x\le \:-70$

Step-by-step explanation:

Let the unknown number be x

at most -70 = ≤ -70

$x\times(-7) \leq -70\\\\-7x\leq -70$

Solving further :

$-7x\le \:-70\\\\\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}\\\\\left(-7x\right)\left(-1\right)\ge \left(-70\right)\left(-1\right)\\\\Simplify\\\\7x\geq 70\\\\\mathrm{Divide\:both\:sides\:by\:}7\\\\\frac{7x}{7}\ge \frac{70}{7}\\\\Simplify\\\\x \geq 10$

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2 years ago

Please help me on problem 4

vfiekz [6]

To find the answer I just added all of the dots after the three (amount of books read) and it is equal to 7. :D hope this helped :D

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3 years ago

Read 2 more answers

Which shows the use of a credit card

kotykmax [81]

C is what you do when credit cards are involved.

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3 years ago