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3 years ago

(x-4)2 = 36

1 answer:

3 0

There is 2 equation or 2 x if you prefer

1. X-4= 6. That is equal to 10 so x1=10
2. X-4= -6. That is equal to -2 so x2= -2

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Find the values of X and Y.

Natasha_Volkova [10]

Answer:

x = 90°

y = 43°

Step-by-step explanation:

We know that one angle equals 47°.

The two triangles are right triangles, so that makes x = 90°.

To find y, we add 90 + 47.

That would give us 137°.

All triangles add up to 180°.

180 - 137 = 43.

43° is the answer.

3 0

4 years ago

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I am a 2-digit number. The sum of my two digits is 14. I have more tens than ones. write two numbers I can be.

beks73 [17]

86 and 95; 8+6=14 and 9+5 also =14. The tens value for both of these numbers are also higher than their ones place.

7 0

3 years ago

A group of biologists is surveying the mice population in a forest. The equatio n=75 times 3t gives the total number of mice, n,

enot [183]

I think the equation should be

$n=75\cdot3^t$

where 3 is the common ratio of the exponential function

so the answer is C.

4 0

1 year ago

(i) Challenge: Thembi received 8% discount on an item which cost

Paul [167]

Answer:

$x = 0.25$

Step-by-step explanation:

Given

$Cost\ Price = 6 + x$

$Discount =8\%$

$Amount\ Paid = R6 - x$

Required

Find x

First, we calculate the amount paid in terms of the cost price.

This is calculated using:

$Amount\ Paid = Cost\ Price * (100\% - Discount)$

$Amount\ Paid = (6 + x) * (100\% - 8\%)$

$Amount\ Paid = (6 + x) * 92\%$

Express as decimal

$Amount\ Paid = (6 + x) * 0.92$

Open bracket

$Amount\ Paid = 5.52 + 0.92x$

So, we have:

$Amount\ Paid = 5.52 + 0.92x$ and

$Amount\ Paid = R6 - x$ ---- given

Equate both

$6 - x = 5.52 + 0.92x$

Collect like terms

$- x -0.92x= 5.52-6$

$-1.92x= -0.48$

$1.92x= 0.48$

Solve for x

$x = \frac{0.48}{1.92}$

$x = 0.25$

8 0

3 years ago

A restaurant charges $5 for one sandwich, $9.90 for two sandwiches, and $14.25 for three sandwiches. Is it proportional?

faltersainse [42]

i think the answer is yes

3 0

4 years ago

Read 2 more answers