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Tju [1.3M]
3 years ago
9

1/3h-4(2/3h-3)=2/3h-6

Mathematics
2 answers:
serious [3.7K]3 years ago
7 0
\frac{1}{3}h -4(\frac{2}{3}h-3^{(3})=\frac{2}{3}h-6^{(3} \\\\ \frac{h}{3} -4*\frac{2h-9}{3}=\frac{2h-18}{3} \\\\ h-4(2h-9)=2h-18 \\\\ h-8h+36=2h-18 \\\\ -7h+36=2h-18 \\\\ -7h-2h=-18-36 \\\\ -9h=-54 \\\\ \boxed{h=\frac{-54}{-9}=6}
Elena-2011 [213]3 years ago
6 0
\frac{1}{3}h-4(\frac{2}{3}h-3)=\frac{2}{3}h-6\ \ \ \ |multiply\ by\ 3\\\\
h-4(2h-9)=2h-18\\\\
h-8h+36=2h-18\\\\
-7h+36=2h-18\ \ \ |subtract\ 2h\\\\
-9h+36=-18\ \ \ |subtract\ 36\\\\
-9h=-54\ \ \ |divide\ by\ -9\\\\
h=6
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Which expression is equivalent to -9-(-4 1/3)
qaws [65]

Note that two negatives = one positive

- (-4 1/3) = + 4 1/3

Subtract

-9 + 4 1/3 = -4 2/3

-4 2/3 is your answer

hope this helps

3 0
3 years ago
On the coordinate plane shown, each grid unit represents 10 feet. Polygon QRST has vertices Q(20, 30), R(−10, 30), S(−10, −20),
beks73 [17]

The coordinate plane is missing, so i have attached it.

Answer:

Perimeter of room = 140 ft

Area of room = 1200 sq.ft

Step-by-step explanation:

From the cordinate plane attached, we can see the polygon QRST which represents the floor plan of the roo.

Thus;

The length of the sides of the room are;

ST = RQ = 30

QT = RS = 40

Perimeter of a rectangle is the sum of all sides of the rectangle.

Thus, perimeter of the room = (30 × 2) + (40 × 2) = 140 ft

Now, area of a rectangle is the product of two perpendicular sides.

Thus area of room = 40 x 30 = 1200 sq.ft

4 0
3 years ago
What is the averge speed of a plane flying 2,184 miles from knoxville tn to los angeles ca in 7 hours
katrin2010 [14]

Answer:

312 mi/hr

Step-by-step explanation:

Distance = 2184 miles

Time taken = 7 hours

Average speed = Distance / time taken

Average speed = 2184 miles / 7 hours

Average speed = 312 miles per hour

Hence, the average speed Traveled by the plane traveling from Knoxville to Los Angeles is 312 miles per hour

5 0
3 years ago
Does 4/8 +7/8=11/16 or 11/8
ss7ja [257]
That's easy it is 11/8 because 4+7=11 8 will be the same
5 0
3 years ago
Read 2 more answers
What is the solution for -10 < x - 9?
ikadub [295]
ANSWER:

x > - 1

STEP-BY-STEP EXPLANATION:

- 10 < x - 9

x - 9 > - 10

x > - 10 + 9

x > - 1
6 0
3 years ago
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