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3 years ago

WHATS THE EQUATION & TELL HOW YOU GOT IT !!

Mathematics

2 answers:

Dafna1 [17]3 years ago

8 0

Answer:

SEE THE IMAGE ABOVE FOR ANSWER.

Sav [38]3 years ago

5 0

Answer: (7x - 2) + (4x) + (5x - 10) = 180

Explanation: The sum of all angles in a triangle is 180º, so you need to make all the angles in the triangle equal to 180º when writing an equation.

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in an exam 90% students passed if the 15 student fail find the number of students appeared in the examination

Oliga [24]

Answer:

150

Step-by-step explanation:

15 fail

90 percent pass

15=10 percent

135=90 percent

150

6 0

2 years ago

Read 2 more answers

HELP ME PLEASE!! Word problem, what's wrong? explain.

dmitriy555 [2]

Answer:

She made a mistake in Step 7.

Step-by-step explanation:

Step 1 through 6 are correct. Only from Step 6 to Step 7 the problem comes in: both sides of the equation are multiplied by x, however the x on the left side, by error, becomes 1. The correct state in Step 7 should look like this:

$x(\frac{1}{2}P-x)=256$

8 0

3 years ago

The smiths have saved $25,000 toward the purchase of a new car. If the sales tax is 5%, the purchase price of smiths new car bef

lukranit [14]

Answer:

26,250

Step-by-step explanation:

25,000 + 5% = 26,250

:) please mark Brainliest

8 0

3 years ago

Please help!! I need ASAP 10 points <3

Readme [11.4K]

5m+8 that’s it I’m pretty sure

5 0

3 years ago

The height of an object tossed upward with an initial velocity of 120 feet per second is given by the formula h = −16t2 + 120t,

AleksAgata [21]

Answer:

7.5 seconds

Step-by-step explanation:

$h = - 16 {t}^{2} + 120t \\ \because \: we \: have \: to \: find \: the \: time \: required \: \\ for \: the \: object \: to \: return to \: its \: \\ point \: of departure. \\ \therefore \: plug \: h = 0 \: in \: the \: given \: euation. \\ \therefore \: 0 = - 16 {t}^{2} + 120t \\ \therefore \:16 {t}^{2} - 120t = 0 \\ \therefore \:8t(2t - 15) = 0 \\ \therefore \:8t = 0 \: \: or \: \: (2t - 15) = 0 \\ \therefore \:t = \frac{0}{8} \: or \: t = \frac{15}{2} \\ \therefore \:t = 0 \: or \: t = 7.5 \\ \because \: t = 0 \: is \: not \: possible \\ \huge \purple{ \boxed{ \therefore \: t = 7.5 \: seconds}}$

Thus, the time required for the object to return to its point of departure is 7.5 seconds.

4 0

2 years ago