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weeeeeb [17]
2 years ago
5

Solve the equation by using the quadratic formula.

Mathematics
2 answers:
Luda [366]2 years ago
7 0

Answer:

The answer is B

Step-by-step explanation:

Sergeeva-Olga [200]2 years ago
4 0

Answer:

B

Step-by-step explanation:

2x² + 5x -3 = 0

2x² - x + 6x - 3 = 0

x(2x-1) + 3(2x-1) = 0

(x+3) (2x-1) = 0

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A student's grade depends on her score on four equally-weighted exams. Her average on the first three exams is 92. What must she
Sergeeva-Olga [200]
3x92 = 276 (first 3 exams)
average of at least 90 (90 x 4 = 360)

360 - 276 = 84

Answer
<span>she needs to score at least 84 on the fourth exam </span><span>in order to guarantee a final average of at least 90</span>
4 0
3 years ago
Apple juice has 216 grams of sugar for every 8 servings. The soda has 234 grams of sugar for every 9 servings
pav-90 [236]

Answer:

Apple juice contains 1728 g sugar whereas soda contains 1404 g sugar

Step-by-step explanation:

3 0
2 years ago
Work out the perimeter of a quarter-circle with radius 7cm.
Flura [38]

Answer:

25

Step-by-step explanation:

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=11cm+14cm

=25

7 0
3 years ago
Read 2 more answers
What interest rate is needed
KatRina [158]

Answer:

How to calculate interest rate

Step 1: To calculate your interest rate, you need to know the interest formula I/Pt = r to get your rate. ...

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5 0
2 years ago
Which regular polygon has a minimum rotation of 45 degrees to carry the polygon onto itself?
lubasha [3.4K]

Answer:

Hence, a regular polygon that has a minimum rotation of 45 degrees to carry the polygon onto itself is:

A. octagon.

Step-by-step explanation:

We know that the for a regular polygon with 'n' sides the minimum rotation that can carry the polygon onto itself is:

\dfrac{360\degree}{n}

Here we are given the minimum angle of  rotation such that polygon is transformed to itself as 45 degree.

i.e. we have:

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( Since a polygon with 8 sides is called a octagon)

7 0
3 years ago
Read 2 more answers
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