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antiseptic1488 [7]
3 years ago
12

Someone explain why the answer is B

Mathematics
2 answers:
Sphinxa [80]3 years ago
7 0

Answer:

Step-by-step explanation:

ok it is b because nigtive divied by  postive will be nigtive so you can eilmate d,a so than you just keep change flip and sorry for my speling :)

Vlad1618 [11]3 years ago
7 0

Answer:

see explanation

Step-by-step explanation:

- \frac{x}{2} ÷ \frac{5}{7}

• leave the first fraction

• change division to multiplication

• turn the 2nd fraction upside down

= - \frac{x}{2} × \frac{7}{5} ( multiply values on numerators/ denominators )

= - \frac{x(7)}{5(2)}

= - \frac{7x}{10} → B

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Here are the dimensions of the oven tray Jenny bakes the cakes on 600mm by 500mm. Each cake tin is 25 cm in diameter. How many c
storchak [24]
Given:
2 shapes: rectangle (tray) and circle (cake tin)

We need to find the area of each shape.

We need to convert mm to cm. 1mm = 0.1cm
600mm x 0.1cm/1mm = 60cm
500mm x 0.1cm/1mm = 50cm

Area of the Tray = 60cm * 50cm = 3,000cm²

Area of the cake tin = π r²
r = d/2 = 25/2 = 12.5cm

Area of the cake tin = 3.14 * (12.5cm)²
Area of the cake tin = 3.14 * 156.25cm²
Area of the cake tin = 490.625cm²

Area of the tray ÷ Area of the cake tin = number of cake tins that fit
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Only 6 cake tins Jenny can fit on the oven tray at one time.
7 0
4 years ago
Mary has scored 78 , 60 , 82 , 94 , and 88 on her previous five tests . What score does she need on her next test so that her av
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Answer:

She needs to score 78 on her next test

Step-by-step explanation:

\frac{78+60+82+94+88+x}{6}=80

Collect like terms;

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Subtract 402 from both sides;

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5 0
3 years ago
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6 0
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HELP! STUCK IN PROBLEM!
masha68 [24]

Answer:

See explanation!

Step-by-step explanation:

<u>We are given a graph that shows the</u><u> value (in dollars) </u><u>of a car stereo at </u><u>time t (in years)</u><u> the time t=0 represents when the stereo was purchased.</u>

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The graph given shows an exponential expression with a y-interept at

V_{(t=0)} = 300 dollars.<em> </em>

<em>This denotes that the initial value of a car stereo at year 0 (i.e. when it first entered the market) was at 300 dollars. </em>

<em />

<u>B. What does V(5)=98 mean in terms of the problem?</u>

Looking at the graph for V(5)=98, we know that we are looking at a point (x,y) equal to (5,98).

This denotes that at year t=5, the car stereo value was 98 dollars. Thus since the stereo entered the market the value of the car stereo has decreased by over ≈ 202 dollars.

<u>C. Is the graph increasing or decreasing? What does this mean in terms of the problem? </u>

The graph is Exponentially Decreasing suggesting that as the year t increase, the value of the car stereo is quickly decreasing by larger amounts and not in a linear manner (i.e. the value does not decrease by the same amount every year).

7 0
4 years ago
During each minute of a comedy show, Carlin laughs 5 times. Carlin watches 3 comedy shows every day, and each show is 40 minutes
Salsk061 [2.6K]
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;)
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3 years ago
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