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3 years ago

Find the diameter, rounded to the nearest tenth.a) 55.5b) 68.2c) 60.7d) 49.1

Mathematics

1 answer:

docker41 [41]3 years ago

3 0

Answer:

D 49.1

Step-by-step explanation:

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Factoriza 4x²-y²-6y-9

sveta [45]

$4 x^{2} -y^{2} -6y-9 \\ 4 x^{2} = y^{2} +6y+9 \\ 4 x^{2} =(y+3)(y+3) \\ \sqrt{ 4x^{2} } = \sqrt{(y+3)(y+3)} =\\2x=y+3\\2x-3=y$

y=2x-3

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3 years ago

Read 2 more answers

What greater than 1/3

Sholpan [36]

I think the The answer 1/1 or1/2! If it is not correct then ask some one else

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3 years ago

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Austin bought 5 pairs of jeans and 2 shirts for $166. Travis bought 3 pairs of jeans and 4 shirts for $164 at the same store. Ho

OLEGan [10]

Answer:

pair of jeans = 21

shirt = 30.5

Step-by-step explanation:

Let the cost of each pair of jeans be $ x, and the cost of each shirt be $ y.

Since, cost of each pair of jeans is $ x, the cost of 5 pair of jeans will be $ 5x and cost of 2 shirts will be $ 2x.

Likewise, the cost of each pair of jeans is $ x, so the cost of 3 pair of jeans will be $ 3x and cost of 4 shirts will be $ 4y.

5 pair of jeans and 2 shirts for $166. This means:

Equation 1: 5x + 2y = 166

3 pair of jeans and 4 shirts for $164. This means:

2x + 4y = 164

Dividing both sides by 2, we get:

Equation 2: x + 2y = 82

Subtracting Equation 2 from Equation 1, we get:

5x + 2y - (x + 2y) = 166 - 82

5x + 2y - x - 2y = 84

4x = 84

y = 30.5

Using the value of x, in Equation 2, we get:

21 + 2y = 82

2y = 61

y = 30.5

Since, x represents the cost of pair of jeans, the cost of each shirt is $ 16.

y represents the cost of sweater, so the cost of each sweater is $ 33.

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3 years ago

Rhian sat a maths test and an English test In the Maths test she scored 14 out of 17 In the English test she scored 31 out of 39

BabaBlast [244]

Answer:

Rhian did better in the Math test.

Step-by-step explanation:

Given: Rhian scored $14$ out of $17$ in a Math test. In the English test she scored $31$ out of $39$ .

To find: In which test did she do better?

Solution:

We have,

Rhian scored $14$ out of $17$ in a Math test.

Rhian scored $31$ out of $39$ in an English test.

So, first we need to find the percentage of the marks scored.

Percentage in the Math test $=\frac{14}{17}\times100=82.35 \%$ .

Percentage in the English test $=\frac{31}{39}\times100= 79.49\%$ .

Clearly, the percentage in the Math test is greater than the percentage in the English test.

So, Rhian did better in the Math test.

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3 years ago

Simplify: 16z8-23z8 <br><br>enter the original expression if it can't be simplified

inn [45]

Answer:

The simplified version of that equation would be $-7z^{8}$ .

Step-by-step explanation:

Since $16z^{8}$ and $23z^{8}$ have the same exponent and variable, we can combine them normally.

$16z^{8}$ - $23z^{8}$ = $-7z^{8}$

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4 years ago

Find the diameter, rounded to the nearest tenth.a) 55.5b) 68.2c) 60.7d) 49.1​

Find the diameter, rounded to the nearest tenth.a) 55.5b) 68.2c) 60.7d) 49.1