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3 years ago

Coefficient: A number that multiplies a variable.

Mathematics

2 answers:

nataly862011 [7]3 years ago

7 0

Answer:

coefficient of x is -7

coefficient of y is 1

Step-by-step explanation:

The first expression is -7x.

A Coefficient is any constant which is multiplied with any variable in an expression.

So, from this definition, we can see that -7 is multiplied with the variable x.

So, the coefficient of x in -7x is -7.

The second expression is y.

We can rewrite this as 1y

We can see that 1 is multiplied with the variable y

Hence, the coefficient y in y is 1.

exis [7]3 years ago

3 0

The coefficient of X would be the -7 because you are multiplying x by -7.

Because Y is by itself, there is no coefficient, but some people would say the coefficient is 1 because any number/ variable multiplied by one remains the same.

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-2(bx - 5) = 16 What’s does b and x equal?

horrorfan [7]

To solve this problem you must apply the proccedure shown below:
You have the following equation given in the problem above:
-2(bx - 5) = 16
 When you solve for bx, you have:
-2(bx - 5) = 16
-2bx-10=16
-2bx=26
bx=26/-2
bx=-13

When you solve for b, you obtain:
-2(bx - 5) = 16
-2bx=26
b=-(26/2x)

When yoo solve for x:
2bx=26
x=-(26/2b)

3 0

3 years ago

Find the angle measure that makes the statement true. Sin 25° = Cos ____ °

givi [52]

Since the sine and cosine functions are cofunctions, they are complementary. The format for this is that sinx=cos(90-x). This works for secant and cosecant and tangent and cotangent. So, sin25°=cos65°.

5 0

3 years ago

Carlton and Leon are expert bowlers. Seventy percent of Carlton's rolls are strikes, while 67% of Leon's rolls are strikes. Supp

IgorC [24]

Answer:

The probability that Leon strikes is greater than Carlton strike is 0.40905

Step-by-step explanation:

From the question, we have;

The percentage of Carlton's rolls are strikes, $\hat p_1$ = 70%

The number of games Carlton played, n₁ = 25

The percentage of Leon's rolls that are strikes, $\hat p_2$ = 67%

The number of games Leon played, n₂ = 25

Therefore, we have;

$\hat p=\dfrac{k_1 + k_2}{n_1 + n_2}$

Where;

k₁ = 0.7 × 25 = 17.5

k₂ = 0.67 × 25 = 16.75

$\therefore \hat p=\dfrac{17.5 + 16.75}{25 + 25} = 0.685$

The test statistic is given as follows;

$Z=\dfrac{\hat{p}_1-\hat{p}_2}{\sqrt{\hat{p} \cdot (1-\hat{p})\cdot \left (\dfrac{1}{n_{1}}+\dfrac{1}{n_{2}} \right )}}$

$Z=\dfrac{0.7-0.67}{\sqrt{0.685 \cdot (1-0.685)\cdot \left (\dfrac{1}{25}+\dfrac{1}{25} \right )}} \approx 0.2283$

From the z-table, we have;

The p-value for Carlton strikes is greater than Leon's strike = 0.59095

∴ The p-value for Leon strikes is greater than Carlton strike = 1 - 0.59095 = 0.40905

The probability that Leon strikes is greater than Carlton strike = 0.40905

8 0

3 years ago

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noname [10]

Answer:

Yes

Step-by-step explanation:

A proportional relationship between a quantity y and a quantity x that has a constant of proportionality k is represented by the equation y = kx. If an equation in a different form can be rewritten as above, then it is a proportional relationship.

6 0

3 years ago

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Inessa05 [86]

Answer:

Step-by-step explanation:

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8 0

3 years ago

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