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Delicious77 [7]
3 years ago
9

drag the tiles to the correct boxes to complete the pairs. not all tiles will be used. solve for x and match the solutions

Mathematics
2 answers:
Norma-Jean [14]3 years ago
8 0

Answer:

x=-\frac{a}{6}

x=\frac{3}{a}

x=-\frac{6}{a}

Step-by-step explanation:

4=\frac{6}{a}x+5\\\Rightarrow 4-5=\frac{6}{a}x\\\Rightarrow -1=\frac{6}{a}x\\\Rightarrow x=-\frac{a}{6}

\mathbf{x=-\frac{a}{6}}

7+2ax=13\\\Rightarrow 7-13=-2ax\\\Rightarrow -6=-2ax\\\Rightarrow x=\frac{6}{2a}\\\Rightarrow x=\frac{3}{a}

\mathbf{x=\frac{3}{a}}

-ax-20=-14\\\Rightarrow -ax=-14+20\\\Rightarrow -ax=6\\\Rightarrow x=-\frac{6}{a}

\mathbf{x=-\frac{6}{a}}

maxonik [38]3 years ago
4 0

Answer:

1. x = - a/6

2. x = 3/a

3. x = - 6/a

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Which points are located in Quadrant l? Check all that apply. (0, 0) (1, 1) (7, 3) (5, 0) (8, 0) (1, 10)
Kamila [148]
When both the x and the y in coordinates are positive and not equal to zero, the points are in Quadrant I. So, the correct answers are (1,1), (7,3), and (1,10). Hope this helps!
5 0
3 years ago
Read 2 more answers
A house and a lot cost more than $89,000. The house cost $1000 more than seven times the cost of the lot. How much does the lot
tatyana61 [14]
7x+1000+x=89000

7x+x+1000-1000=89000-1000
8x=88000

8x/8=88000/8
x=$11000
4 0
3 years ago
(23q – 34) and (–16q – r)
pochemuha

Answer:

=−368q2−23qr+544q+34r

Step-by-step explanation:

7 0
3 years ago
Fizzy Waters has been involved in multiple lawsuits regarding the alkaline substance concentration in their product and getting
ser-zykov [4K]

Answer:

Step-by-step explanation:

For the sample, n = 12

Mean, x = (158.2 + 162.8 + 161.5 + 161.2 + 166.5 + 160.1 + 158.4 + 175.6 + 159.9 + 168.8 + 161.9 + 163.7)/12 = 163.22

Variance, s² = (summation(x - mean)²/n

Summation(x - mean)² = (158.2 - 163.22)^2 + (162.8 - 163.22)^2 + (161.5 - 163.22)^2 + (161.2 - 163.22)^2+ (166.5 - 163.22)^2 + (160.1 - 163.22)^2 + (158.4 - 163.22)^2 + (175.6 - 163.22)^2 + (159.9 - 163.22)^2 + (168.8 - 163.22)^2 + (161.9 - 163.22)^2 + (163.7 - 163.22)^2 = 273.5368

Variance, s² = 273.5368/12 = 22.79

This is a test for a single variance. We would set up the test hypothesis.

For the null hypothesis,

H0: σ² ≥ 25

For the alternative hypothesis,

H1: σ² < 25

The formula for determining the test statistic,x² is

x² = (n - 1)s²/σ²

Where n - 1 is the degree of freedom, df.

df = 12 - 1 = 11

x² = (11 × 22.79)/25 = 10.0276

For a test of 90% reliability, Confidence level = 0.9

Cl = 1 - alpha(level of significance)

alpha = 1 - 0.9 = 0.1

The critical value from the chi-square distribution table is 17.28. Since 17.28 > 10.0276, we would reject the null hypothesis. Therefore, the filling machine does not need repair because the variance of the process is not more than 25 oz.

8 0
3 years ago
6. Regroup the numbers in the following problems, putting the numbers that add up to 10 or a multiple of 10 in parentheses.
svetoff [14.1K]

Answer:

a) (2+8)+9

b) (3+7)+5+4

c) (4+16)+2

d) (31+9)+4

Step-by-step explanation:

a) 2+9+8

2 and 8 add up to 10, so we regroup them in parentheses

(2+8)+9


b) 3 + 5 + 4 + 7

3 and 7 add up to 10, so we regroup them in parentheses

(3+7)+5+4


c) 4 + 2 + 16

4 and 16 add up to 20 which is a multiple of 10, so we regroup them in parentheses

(4+16)+2


d) 31 + 4 + 9

31 and 9 add up to 40 which is a multiple of 10, so we regroup them in parentheses

(31+9)+4

4 0
3 years ago
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