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charle [14.2K]
3 years ago
6

For f (x) = 3x+1 and g(x) = x? -6,find (7.8)(x).

Mathematics
1 answer:
Vitek1552 [10]3 years ago
5 0
I believe the answer is C
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3. Sophie and Jackie each have a collection of baseball cards, Jackie has 5 more cards than
IRISSAK [1]

Answer:

Sophie has 12.5 cards

Step-by-step explanation:

Let

x -----> number of cards Sophie has

y -----> number of cards Jackie has

we know that

x+y=30 -----> equation A  

y=x+5 -----> equation B

Solve by substitution

Substitute equation B in equation A and solve for x

x+(x+5)=30

2x=30-5

x=12.5 cards

Note I assume the problem was invented without taking into account the result, because the amount of cards should be a whole number

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2 years ago
Which proportion below has a vertical
creativ13 [48]

Answer:

1 x 6 = 6 and 3 x 6 = 18

Step-by-step explanation:

3 0
3 years ago
A high school sports team is ordering sports drinks online from a company. The price of sports drinks varies, based on the numbe
Elena-2011 [213]

The amount of drinks is a linear function of the number of drinks. The maximum amount that can be purchased is 100 soft drinks.

Let

y \to amount of drinks

x \to number of drinks

For drinks not more than 50

y = 10 + 0.8x

For drinks more than 50.

y = 15 + 0.7x

For a purchase of $85, it means that:

y = 85

So, we solve for x in both equations.

y = 10 + 0.8x

85 = 10 + 0.8x

Collect like terms

0.8x = 85-10

0.8x = 75

Divide through by 0.8

x = 93.75

x = 94 --- approximated

y = 15 + 0.7x

85 =15 + 0.7x

Collect like terms

0.7x = 85 - 15

0.7x = 70

Divide by 0.7

x = 100

By comparing both values:

x = 100

x = 94

100 > 94

Hence, the maximum amount that can be purchased is 100

Read more about functions at:

brainly.com/question/20286983

5 0
3 years ago
Read 2 more answers
What is the slope of line that passes through the points
mariarad [96]

Answer:

m = -3.6 / -9.5 = 0.37895

Step-by-step explanation:

3 0
3 years ago
WILL GIVE BRAINLIST FOR RIGHT ANSWER please help me ​
ValentinkaMS [17]

Answer:

  A.  Rectangle

Step-by-step explanation:

It is often useful to plot the given points on a graph. Doing that lets you see the figure is a rectangle. You can count grid squares to see that the distances are the same between the endpoints of opposite sides.

4 0
3 years ago
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