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ale4655 [162]
3 years ago
9

Select the graphs that have an equation with a < 0.

Mathematics
2 answers:
Eddi Din [679]3 years ago
7 0

Answer:

Second graph only.

Step-by-step explanation:

The standard equation of a parabola is ax^2+bx+c where a,b and c are coefficients.

If the coefficient of (a) is positive then the parabola is concave upwards (as in picture 1)

If the coefficient of (a) is negative then the parabola is concave downwards as in picture 2.

tatiyna3 years ago
5 0

Answer:

Its the second and third graphs only

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If -3(y-1)=9 find the value of 1/2y
Sveta_85 [38]

Answer:

-1

Step-by-step explanation:

y-1=-3

y=-2

.:1/2y=1/2(-2)=-1

4 0
3 years ago
A cyclist estimates that he will bike 80 miles this week. He actually bikes 75.5 miles. What is the percent error of the cyclist
maw [93]

Answer:

<em>The percent error of the cyclist's estimate is 5.63%</em>

Step-by-step explanation:

<u>Percentages</u>

The cyclist estimates he will bike 80 miles this week, but he really bikes 75.5 miles.

The error of his estimate in miles can be calculated as the difference between his estimate and the real outcome:

Error = 80 miles - 75.5 miles = 4.5 miles

To calculate the error as a percent, we divide that quantity by the original estimate and multiply by 100%:

Error% = 4.5 / 80 * 100 = 5.625%

Rounding to the nearest hundredth:

The percent error of the cyclist's estimate is 5.63%

5 0
2 years ago
Kendra had a beaded necklace business. She can make 12 necklaces in 2 hours. How long will it take her to make 9 necklaces?
mars1129 [50]

then + 10% of that total for overhead costs.


6 0
3 years ago
Read 2 more answers
Jane has 63m ribbon.If she cuts 56m 21cm ribbon from it,what length of ribbon will be left.​
marta [7]
Exchange : 63m = 6300 cm; 56m21cm= 5621cm
So the lengths of the ribbon will be left is : 6300 - 5621 = 679cm = 6.79 m

Hope it helps! If it is, Brainliest please!
7 0
3 years ago
What is the solution to the equation?
Otrada [13]

Answer:

The format of this equation is wrong

3 0
2 years ago
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