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larisa [96]
3 years ago
13

Kelly's Cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 20 coffees in all, 30% of which were reg

ular. How many regular coffees did the cafe serve?
Mathematics
1 answer:
Harman [31]3 years ago
6 0

Answer:

the cafe served 6 regular coffees

Step-by-step explanation:

to get your answer you can multiply the percentage times the amount served in total

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(5,1) (3,2) Write the equation in point-slope form​
SCORPION-xisa [38]

Answer: y-1=-1/2(x-5)

Step-by-step explanation:

\frac{2-1}{3-5}

-1/2 slope

y-y_{1}=m(x-x_{1})

y-1=-1/2(x-5)

y-1=-1/2x +5/2

y=-1/2x+7/2

7 0
3 years ago
What is the value of x
masha68 [24]
42...But try to get another answer though because I’m not 100 percent correct
4 0
3 years ago
The ratio of the measures of the angles of a triangle is 2:3:10. What is the measure of the smallest angle?
cricket20 [7]

Answer w2

2

3

?

10

or

10

Step-by-step explanation:

8 0
3 years ago
I WILL AWARD BRAINLIEST!! PLEASE HELP!!
Veseljchak [2.6K]

Answer:

1)\\\large\boxed{x=\dfrac{a+c}{b},\ if\ b\neq0}\\\\2)\\\boxed{if\ a=\dfrac{63b}{23}\ then\ x\ is\ any\ real \ number}\\\\\boxed{if\ a\neq\dfrac{63b}{23}\ then\ x\ not\ exist\ (no\ solution)}

Step-by-step explanation:

1)\\a-(a+b)x=(b-a)x-(c+bx)\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\a-ax-bx=bx-ax-c-bx\qquad\text{cancel}\ bx\ \text{on the right side}\\\\a-ax-bx=-ax-c\qquad\text{add}\ ax\ \text{to both sides}\\\\a-bx=-c\qquad\text{subtract}\ a\ \text{from both sides}\\\\-bx=-a-c\qquad\text{divide both sides by}\ -b\neq0\\\\x=\dfrac{-a-c}{-b}\\\\x=\dfrac{a+c}{b}

2)\\2(3x-5a)+9(2a-7b)+3(5a-2x)=0\\\\\text{use the distributive property}\ a(b+c)=ab+ac\\\\(2)(3x)+(2)(-5a)+(9)(2a)+(9)(-7b)+(3)(5a)+(3)(-2x)=0\\\\6x-10a+18a-63b+15a-6x=0\qquad\text{combine like terms}\\\\(6x-6x)+(-10a+18a+15a)-63b=0\\\\23a-63b=0\qquad\text{add}\ 63b\ \text{to both sides}\\\\23a=63b\qquad\text{divide both sides by 23}\\\\a=\dfrac{63b}{23}\\\\if\ a=\dfrac{63b}{23}\ then\ x\ is\ any\ real \ number\\\\if\ a\neq\dfrac{63b}{23}\ then\ x\ not\ exist\ (no\ solution)

3 0
4 years ago
Evan earns $18 per hour. How much will he earn per hour after he gets a 5% raise?
Mnenie [13.5K]
$18 + $.9(5%) = $18.9
the thing with percentage is just moving decimals 100% = 1, 45% = .45, 10% = .1 and so on
so here you can solve it by taking 18 and multiplying it by .05(which is 5% if you understand my examples above)
.
or orally like i did, (note 10% is moving the decimal to the left one time so 10% of 18 is 1.8 and half of 1.8 is .9 which is 5% since the half of 10% is 5% lol )
3 0
3 years ago
Read 2 more answers
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