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2 years ago

Solve 7x+y=50 4x+y=23 simultaneously

Mathematics

2 answers:

Aloiza [94]2 years ago

6 0

so the value of x is 9 and y is -13.

Hope this will help u...

Cloud [144]2 years ago

4 0

Answer:

x = 9 and y = -13

Step-by-step explanation:

7x + y =50.... eq 1

4x + y =23....eq 2

Subtract eq 2 from eq 1

7x + y = 50

4x + y = 23

This becomes;

7x - 4x + y - y= 50 -23

3x = 27

Divide both sides by the coefficient of x; 3

x = 9

Slot in the value of x in eq 1

7 (9) + y = 50

63 + y = 50

Subtract 63 from both sides

63 - 63 + y = 50 - 63

y = -13

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How to solve this linear equation step by step please

mote1985 [20]

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7 0

2 years ago

Which equation can be used to solve for m∠1? m∠1 = One-half(a – b) m∠1 = One-half(a + b) m∠1 = One-half(c – d) m∠1 = One-half(c

Artemon [7]

Answer:

$m\angle 1=\frac{1}{2}(arc\ a+arc\ b)$

Step-by-step explanation:

The picture of the question in the attached figure

we know that

The measure of the interior angle is the semi-sum of the arches that comprise it and its opposite.

$m\angle 1=\frac{1}{2}(arc\ a+arc\ b)$

8 0

2 years ago

Read 2 more answers

The mean weight of frozen yogurt cups in an ice cream parlor is 8 oz.Suppose the weight of each cup served is normally distribut

vaieri [72.5K]

Answer:

10.03% probability of getting a cup weighing more than 8.64oz

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 8, \sigma = 0.5$

What is the probability of getting a cup weighing more than 8.64oz

This is the 1 subtracted by the pvalue of Z when X = 8.64. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{8.64 - 8}{0.5}$

$Z = 1.28$

$Z = 1.28$ has a pvalue of 0.8997

1 - 0.8997 = 0.1003

10.03% probability of getting a cup weighing more than 8.64oz

4 0

2 years ago

How to determine if an ordered pair is a solution

levacccp [35]

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The point (3,2) works for both equations, so it is a solution.

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3 years ago

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Answer:

Step-by-step explanation:

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-Silver

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2 years ago