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Andru [333]
3 years ago
12

A 2-digit number with x units and 7 less units than tens.

Mathematics
1 answer:
Hatshy [7]3 years ago
7 0
Each two digit number has two numbers (duh!). Let's allow the tens digit to be x and the units digit to be y. Tens digit is 3 less than the units digit: x = y-3 Original number is 6 more than 4 times the sum of the digits: 10x+y-6 = 4x + 4y This gives us simultaneous equations!First let's clear the mess: 1. x= y-32. 6x-3y=6 Substitute 1 into 2: 6(y-3) -3y =66y - 18 - 3y = 6
 3y = 24y = 8 Our units digit is 8 Substitute y= 8 into 1. x = y - 3x = 5 Our tens digit is 5 Therefore, our number is 58
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Coach De Leon purchases sports equipment. Basketballs cost $20.00 each, and soccer balls cost $18.00 each. He had a budget of $1
IRINA_888 [86]

Answer:

5 basketballs and 2 soccer balls

Step-by-step explanation:

5 times 20= 100

2 times 18= 36

equals 136

4 basketballs and 6 soccer balls- wrong-185

2 basketballs and 7 soccer balls-wrong-166

6 basketballs and 5 soccer balls- wrong- over 200

4 0
3 years ago
Read 2 more answers
Suppose that engineering specifications on the shelf depth of a certain slug to be turned on a CNC lathe are from .0275 in. to .
MrRa [10]

Answer:

0.8188 or 82%

0.0000643

Step-by-step explanation:

Given that engineering specifications on the shelf depth of a certain slug to be turned on a CNC lathe are from .0275 in. to .0278 in.

If x is the dimension then X is N(0.0276, 0.0001)

Or \frac{x-0.0276}{0.0001} is Normal (0,1)

a) Fraction  of shelf depths are in specifications

=P(0.0275

b) For 98% to be within the specifications,

\mu = 0.02765

Margin of error = 0.0278-0.02775\\=0.00015

For 98% critical value Z two tailed is 2.33

Hence std error = \frac{0.00015}{2.33} \\=0.0000643

So sigma should be = 0.0000643

3 0
3 years ago
Find the sum of the infinite series 4 3.2 2.56 2.048
eduard
2.325647 is your answer .


8 0
3 years ago
Which numbers are a distance of 4 units from 7 on the number line?
gayaneshka [121]

On the number line, 3 and 11 are the numbers that are a distance of 4 units from 7..

On there are two types of numbers one is a positive and the other is a negative number. These two are separated by the number zero which is known as the origin. Positive numbers are on the right side of the origin and negative numbers are on the left side of the origin on the number line.

We have been asked the numbers which are a distance of 4 units from 7 on the number line.

For that, we will first add 4 to the number 7, that is,

                            4 + 7 = 11

Thus, number 11 is a distance of 4 units from 7 on the number line if we move to the right side from 7.

Now we will subtract 4 from the 7 we will get,

                          7-4 = 3

Thus, Number 3 is a distance of 4 units from 7 on the number line if we move to the left side from 7.

Hence 3 and 11 are the numbers that are a distance of 4 units from 7 on the number line.

Learn more about the number line here: brainly.com/question/77754

#SPJ9

4 0
2 years ago
— 7х + Зу = 2<br> Which ordered pair is a solution of the equation
lidiya [134]
There’s no picture but three ordered pairs for the equation would be: (0,2/3), (1,3), (2,16/3).
4 0
4 years ago
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