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nadya68 [22]
3 years ago
6

Help ! Easy 7th grade work ! I’ll give brainliest!

Mathematics
1 answer:
balu736 [363]3 years ago
5 0

Answer:

Step-by-step explanation:

a.  2415

b.  3124

c. 627

d. 8

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James bought 6 baseball cards at a garage sale for $0.45 each. He sold them to a collector for $1.25 each. What was his profit?
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Answer:

$4.80.

Step-by-step explanation:

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3 years ago
Teddy makes 32 fluid ounces of hot cocoa. He pours equal amounts of cocoa into 5 cups. The amount of hot cocoa in each cup will
alisha [4.7K]
B is the answer trust me lol
8 0
3 years ago
Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real
garik1379 [7]

The complete question is

"Substitute the values for a, b, and c into b2 – 4ac to determine the discriminant. Which quadratic equations will have two real number solutions? (The related quadratic function will have two x-intercepts.) Check all that apply.

0 = 2x^2 – 7x – 9

0 = 4x^ 2 – 3x – 1

The quadratic equations that have real number solutions are; 4x^2 – 3x – 1, and 2x^2 – 7x – 9.

<h3>What is the formula for Discriminant?</h3>

The formula for finding the discriminant is

b^2 - 4ac

The solution contains the term \sqrt{b^2 - 4ac} which will be:

Real and distinct if the discriminant is positive

Real and equal if the discriminant is 0

Non-real and distinct roots if the discriminant is negative

For the quadratic equation 2x^2 - 7x - 9

b^2 - 4ac

= (-7) ^2 - 4( 2) ( -9)\\\\= 49 + 72 = 121

This equation has two real number solutions.

For the quadratic equation 4x^ 2 - 3x- 1

b^2 - 4ac

= (-3) ^2 - 4( 4) ( -1)\\\\= 9 + 16 = 25

This equation will have two real number solutions.

Learn more on discriminant here:

brainly.com/question/1537997

#SPJ1

5 0
2 years ago
Match the term on the right with its image or description on the left.
jasenka [17]
There is no picture to answer or have a base on try deleting it and re uploading the question
3 0
3 years ago
Read 2 more answers
Identify the variation as direct, inverse, joint or combined. A = r²
myrzilka [38]

Answer : Direct Variation

Question :

Identify the variation as direct, inverse, joint or combined. A = \pi r^2

We know direct variation is y = kx

Where k is the constant of proportionality

When value of x increases then y also increases. when x value decreases then y value decreases.

The value of y depends on value of x It means y is directly proportional to x.

Hence A = \pi r^2 is a direct variation.


4 0
3 years ago
Read 2 more answers
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