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umka21 [38]
3 years ago
8

I need help to solve these two problems

Mathematics
1 answer:
Gnom [1K]3 years ago
6 0

9) Standard form: 83,023,007  expanded form: 80,000,000 + 3,000,000 + 20,000 + 3,000 + 7


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Evaluate each function.<br> 1) f(x) = x2 + 4x; Find f(-7)
katrin [286]

Answer:

The answer is -77

Step-by-step explanation:

Ok, so assuming by x2 you mean x squared, I will solve this. So basically when you have a function, f(-7) would mean that you would have to replace all the x's in the equation with -7. So let's write that out. that would be f(-7) = -7^2 + (-7*4). So now according to PEMDAS, you would solve the exponent first, and -7^2 is equal to -49, because when you solve it you would do -(7^2), which is -(49), which is then -49. So now you have f(-7)= -49+ (4*-7). Solving for (4*-7), you get -28. This leaves you with -49 + (-28), which is -49 - 28. Simplifying that, you get the answer, which is -77.

5 0
3 years ago
Help me!<br> solve for w
Ket [755]

Answer:

w = 5 , w = -5

Step-by-step explanation:

w^2 = 25

Take the square root of  each side

sqrt(w^2) = ± sqrt(25)

w = ±5

6 0
2 years ago
Read 2 more answers
In August, Emily's Clothing Store sold 98 long sleeve shirts with the ratio of short sleeve to long sleeve being 3:7. How many s
Gnoma [55]

Answer:

the number of short sleeves sold is 42

Step-by-step explanation:

The computation of the number of short sleeves sold is shown below:

Given that

The clothing store sold 98 long sleeve shirts

And, the ratio of short sleeve to long sleeve is 3:7

So, the number of short sleeves sold is

= 98 × 3 ÷ 7

= 42

Hence, the number of short sleeves sold is 42

6 0
3 years ago
140% out of what gives 56
Verizon [17]


140 / 100 * X = 56

X = 56 * 100 / 140 = 5600 / 140 = 40

4 0
3 years ago
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What is 472.746 rounded to nearest whole number ?
lorasvet [3.4K]
500.000 is your answer
4 0
3 years ago
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