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8090 [49]
3 years ago
10

Kaitlen has 13 marbles. She gave 5 to Elissa. How many

Mathematics
2 answers:
AVprozaik [17]3 years ago
7 0

Answer:

8

Step-by-step explanation:

13 - 5 = 8

Serga [27]3 years ago
6 0

Answer:

marbles left

=13-5

=8

equation

=13÷5

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Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy
tia_tia [17]

Answer:

84 ounces of pure gold

Step-by-step explanation:

Jess has 60 ounces of an alloy that is 40% gold. How many ounces of pure gold must be added to this alloy to create a new alloy that is 75% gold?

Pure gold = 100% gold

Let the number of ounces of pure gold = x

Hence, we have the equation

40% × 60 ounces + 100%× x ounces = 75%(60 + x)ounces

= 0.4 × 60 + 1x = 0.75(60 + x)

= 24 + x = 45 + 0.75x

Collect like terms

x - 0.75x = 45 - 24

0.25x = 21

x = 21/0.25

x = 84 ounces

Therefore, we need 84 ounces of pure gold

6 0
3 years ago
What are all the powers if 4 that range from 4 through 1000
LekaFEV [45]
You're just going to take exponents of 4. For example, 4 to the power of 1, 4 to the power of 2, 4 to the power of 3, and so on. To get the powers of 4, just multiply 4 by how much the exponent reads. For example 4 to the power of 3 is just 4 multiplied by itself 3 times.
4^1=4
4^2=16
4^3=64
4^4=256
4^5=1024
However, 1024 is greater than 1000 so we do not include it.
7 0
3 years ago
What is the slope of the passing through the points (4,6) and (-1, -2)
Likurg_2 [28]
The\ slope:m=\dfrac{y_2-y_1}{x_2-x_1}\\------------------\\\\(4;\ 6)\to x_1=4\ and\ y_1=6\\(-1;-2)\to x_2=-1\ and\ y_2=-2\\\\subtitute\\\\m=\dfrac{-2-6}{-1-4}=\dfrac{-8}{-5}=\boxed{\frac{8}{5}}
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3 years ago
What is the correct standard form for30+2+.1 +.005
avanturin [10]

Answer:

32.105

Step-by-step explanation:

have a good rest of ur day

3 0
2 years ago
What does the unknown number round to when rounded to the nearest whole?
STALIN [3.7K]

Answer:

0

Step-by-step explanation:

3 0
2 years ago
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