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Svetach [21]
3 years ago
15

Help me with this equation!

Mathematics
2 answers:
vlada-n [284]3 years ago
8 0
The correct answer is B. -12
vova2212 [387]3 years ago
5 0

Answer:

-12

Step-by-step explanation:

a + 5 = -7

Collecting terms:

a = -7 + (-5)

a = -7-5

a= -12

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HELP PLZ IM GIVING 25 BRAIN:EIST PLZZZ
Virty [35]

Answer:

2km

Step-by-step explanation:

Distance = Speed ÷ Time

Distance = 3 ÷ 1.5 (as 1 hour and 30 minutes is an hour and a half)

Distance = 2km

8 0
3 years ago
Read 2 more answers
The price of a technology stock was $9.74 yesterday. Today, the price fell to $9.67. Find the percentage decrease. Round your an
agasfer [191]
% change = (new value - old value)/(old value) * 100%
.. = (9.67 -9.74)/9.74 * 100%
.. = -0.07/9.74 * 100%
.. = -0.7%

The decrease is 0.7%.
5 0
3 years ago
What is the equation of a parabola in vertex form for a line that passed through (5,-4) and has vertex (-2,5)
Ahat [919]

\text{The vertex form of a parabola}\\\\y=a(x-h)^2+k\\\\\text{We have the vertex}\ (-2,\ 5)\to h=-2,\ k=5.\\\\\text{Substitute}\\\\y=a(x-(-2))^2+5=a(x+2)^2+5\\\\\text{We have the point}\ (5,\ -4).\\\text{Substitute the coordinates of the point to the equation:}\\\\-4=a(5+2)^2+5\\\\-4=a(7)^2+5\\\\-4=49a+5\qquad|-5\\\\-9=49a\qquad|:49\\\\a=-\dfrac{9}{49}\\\\Answer:\ \boxed{y=-\dfrac{9}{49}(x+2)^2+5}

5 0
3 years ago
PLSSSSS HELP I HAVE BEEN STUCK ON THIS FOR THE PAST HOUR!!!!!!!!!!!!!!!!!!!!!!!!!
vladimir1956 [14]

Answer:

- 6 \sqrt{2}

Step-by-step explanation:

simplify

\sqrt{28800}

to

120 \sqrt{2}

then

-0.05 × 120 = -6

then we have our answer

-6√2

6 0
3 years ago
3 gallons of paint are used to paint 16 wooden sign how much paint did each sign use? between the two whole numbers does the ans
kkurt [141]
I think you should do it in a decimal idk if im right but in decimal form it is .1875
8 0
3 years ago
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