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VARVARA [1.3K]
3 years ago
6

30.) Patel bought a model rocket kit from a catalog. The price of the kit was $124.95. The

Mathematics
1 answer:
Nastasia [14]3 years ago
3 0

Answer:

10 to afford it

Step-by-step explanation:

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The point (7, 8) is the solution of which of the following systems of equations?
Alex73 [517]

Option 4

<u>V</u><u>e</u><u>r</u><u>i</u><u>f</u><u>i</u><u>c</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u><u>:</u><u>-</u>

\\ \sf\longmapsto x-7y=-49

\\ \sf\longmapsto 7-7(8)=-49

\\ \sf\longmapsto 7-56=-49

\\ \sf\longmapsto -49=-49

And

\\ \sf\longmapsto 10x+9y=142

\\ \sf\longmapsto 10(7)+9(8)=142

\\ \sf\longmapsto 70+72=142

\\ \sf\longmapsto 142+142

Hence verified

8 0
3 years ago
Read 2 more answers
Which card would cost you the least and by how much? If a credit card company A offers a 2% rebate for all purchases during the
olga2289 [7]
Card A:
<span>$4,350  x 0.02 = $87
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Card B:
Interest $270 no rebate

so $273 - $270 = $3

Card B cost least and $3 less than card A</span>
8 0
3 years ago
How many ways are there to choose a committee of 3 people from a group of 5 people? A. 10 B. 12 C. 60 D. 70
kolezko [41]
12 12 12 12 12 12 12 its 12

3 0
3 years ago
Which property explains how we get the equation shown in step 2? Given: -5(x -4) - 20 = -15 Step 1: -5x + 20 -20 = -15 (Distribu
Talja [164]
Step 2: <span>Inverse Property of Addition
</span><span>any number added to its opposite will equal zero
</span>in this case + 20 - 20 = 0

answer
Inverse Property of Addition
8 0
3 years ago
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Child Health and Development Studies (CHDS) has been collecting data about expectant mothers in Oakland, CA since 1959. One of t
liraira [26]

Answer:

<em>A.) There is a 3.4% chance that a random sample of 50 expectant mothers will have a mean age of 26.5 years old or greater if the mean age for a first time mother is 26 years old.</em>

Step-by-step explanation:

The mean age for a first time mother is assumed 26 years old (null hypothesis) and <em>p-value</em> of the sample mean (26.5 years ) is found as 0.034.

This is the probability of having first time mother mean age 26.5 or greater <em>under the assumption of null hypothesis. </em>

3 0
3 years ago
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