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faltersainse [42]
3 years ago
10

morgan has $28.75 on a gift card. she buys seven cups of coffee and has $20 left write and solve an equation to determine the co

st of one cup of coffee.
Mathematics
1 answer:
Rainbow [258]3 years ago
3 0

Step-by-step explanation:

28.75-20=8.75

8.75/7= 1.25

each cup costs $1.25

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For what values of m does the graph of y = 3x2 + 7x + m have two x-intercepts
Irina18 [472]

we are given

y=3x^2+7x+m

To find x-intercept means we have to find zeros

and for finding zeros , we will use quadratic formula

and we have it has two x-intercepts

so, it's discriminant must be greater than 0

so, we will find discriminant

D=\sqrt{b^2-4ac}

now, we can compare with

y=ax^2+bx+c

y=3x^2+7x+m

and then we can find a , b and c

a=3,b=7,c=m

now, we can find D

D=\sqrt{7^2-4*3*m}

D=\sqrt{49-12m}

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so,

D=\sqrt{49-12m}>0

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12m

m............Answer

8 0
3 years ago
Read 2 more answers
How to do this here
Andru [333]
Refer to the attached photo to see the problem worked out
8 0
3 years ago
What is 2 1/2 - 1 1/8
Lady bird [3.3K]

Answer:

<h2>Convert the <em>mixed numbers</em> to </h2><h2><em>improper fractions</em>, </h2><h2>then find the <em>LCD</em> and combine.</h2>

<u />

<u>Exact Form:</u>

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<u>Decimal Form:</u>

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<u>Mixed Number Form:</u>

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4 0
3 years ago
Landon was taking a math test. He finished 1/2 of the test in 3/5 of an hour. How much of the test will he have done in one hour
timama [110]

Answer:

\frac{5}{6}\ of\ the \ test

Step-by-step explanation:

we know that

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so

by proportion

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\frac{(1/2)}{(3/5)}\frac{test}{hours} =\frac{x}{1}\frac{test}{hour}\\ \\x=(1/2)*(5/3)\\ \\x=\frac{5}{6}\ of\ the \ test

7 0
3 years ago
In the diagram below of triangle ABC, CD is the bisector of angle BCA, AE is the bisector of angle CAB and BG is drawn.
pashok25 [27]
There are two solutions
AG =BG
mesDBG = mesEBG
5 0
3 years ago
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