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docker41 [41]
3 years ago
5

brianna needs to earn a c in her algebra class. her current test scores are 77, 66, 80, and 75. Her final exam is worth 6 test s

cores. In order to earn a C Brianna's average must lie between 70 and 79 inclusive. What range of scores can Brianna receive on her final exam to earn a c in the course? Use interval notation to express this range
Mathematics
1 answer:
horsena [70]3 years ago
3 0

Step-by-step explanation:

{(70    <   x < 79)}

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Tell whether the table of values represents a linear function, an exponential function, or a quadratic funtion
gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

if it is linear then it will be a straight line(gradient is the same)

if quadratic then curve(gradeint isnt the same)

y=mx+c

m=[y(2)-y(1)]/[x(2)-x(1)]

you can choose any 2 points from the table

m=2-0.4/0-1

m=-1.6

repeat but 2 different coordinates

m=0.4-0.08/-1--2==>-2.24

m=-2.24

different coordinate therefore quadratic

cant be exponential, because nothing is being raised to some power

5 0
2 years ago
An interior designer sketches a design for a rectangular rug. The dimensions of a sketch are 4 inches by 7.5 in. The dimensions
Black_prince [1.1K]

3,000 in.

(4 x 10) + (7.5 x 10) = 3000


The dimensions on the sketch are 10 times less than the actual rug.


40 in., 7.5 in.


The drawing lengths are ten times more, so you just multiply the dimensions by 10, and then multiply the product you find out to find the actual area of the rug.

4 0
4 years ago
Please help another question
butalik [34]

Answer is D) Y. It's matching with the results given

7 0
3 years ago
Help plz anybody ????????????
Kobotan [32]

Answer: 18 square ft.

Step-by-step explanation:

Surface area is length*width. 1*1= 1*6= 6

since there are three cubes, it is 6*3= 18 square ft total.

4 0
3 years ago
Find the area of the following circle. (Round answer to the nearest whole number.) Circumference = 280 cm. (Hint: Find r from C
Marrrta [24]
Find r :
C=2πr
280=2(3.14)r
r=280/2(3.14)
r=44.6cm

find area :
A=πr²
A=3.14(44.6)²
A=6246 cm²

Answer : 4)6,246
4 0
4 years ago
Read 2 more answers
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