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ratelena [41]
3 years ago
10

Calla bought 8 writing utensils for a total of $30. Pens cost $4 each and pencils cost $3 each. How many pens did she buy?

Mathematics
1 answer:
Mrac [35]3 years ago
3 0
Answer: 3

Explanation:
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The value of square root -9 is not -3 because ___
LUCKY_DIMON [66]

Answer:

you cannot have a negative root. It errors out if you put the negative in the root.

Hope that helps feel free to ask more questions


Brainliest??

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
I will give you brainliest whoever answers correct first!!
iren2701 [21]
X = 24 *(* represents degrees as I’m on mobile)

A straight line is 180*.

The 156* angle and the x* angle make up a straight line, so 156*+x*=180* Subtract 156 from both sides to get x=24*
7 0
3 years ago
What is the product
kirill [66]

Answer:

20s^3+50s^2+32s+6

Step-by-step explanation:

We are given the expression

(4s+2)(5s^2+10s+3)

We must multiply each term to each other term. Then we can combine all of the like terms

(4s+2)(5s^2+10s+3)\\\\20s^3+40s^2+12s+10s^2+20s+6\\\\20s^3+50s^2+32s+6

7 0
4 years ago
What is 1/8 divided by 5/7
SpyIntel [72]
It becomes 7/40. To get it, you have to put 1/8 times 5/7. Then, flip the second fraction, (5/7), so that it becomes 7/5. Multiply 1/8 and 7/5, to get 7/40. You call this "reciprocal". 
5 0
3 years ago
What quantity of a 65% acid solution must be mixed with a 25% solution to produce 600 mL of a 45% solution?
soldier1979 [14.2K]
Lets say x is quantity
65%x+25%(600-x)=45%of 600
.65x+.25(600-x)=.45*600
.65x+150-0.25x=270
0.4x=120
x=300ml
3 0
4 years ago
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