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3 years ago

The 7 in 72 represents how many times the value of the 7 in 78 is what ?

Mathematics

1 answer:

earnstyle [38]3 years ago

7 0

Answer:

One time

Step-by-step explanation:

In both the numbers 72 and 78, the place value of 7 is 70.

Hence, 7 in 72 represents one time the value of the 7 in 78.

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How many solution does an equation have when you isolate the variable and it equals a constant

RoseWind [281]

Answer:

Step-by-step explanation:

it depends. if (for example) y=x2 then there are an infinite amount of answers. if there is an equation like: If (variable X)= (variable Y) + 5 and if X=5, what is Y? then there is only one answer. check an algebra book, it can give you a more detailed answer.

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2 years ago

Triangle PQR has vertices (2,2) (5,-4) and (-4,-1). What type of triangle is triangle PQR

ale4655 [162]

It is a scalene triangle.

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3 years ago

Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

4 0

2 years ago

In which quadrant are all coordinates positive? III IV I II

iVinArrow [24]

Answer:

iv dndhjdjdjdjwiqpwk2jsoemwnsiksn3ow0sk4ned

5 0

2 years ago

PLEASE ANSWER THIS ASAP !!! ( turn sideways )

labwork [276]

Answer:

y = 2/3x - 2

Step-by-step explanation:

y-intercept:

Point line crosses the y axis is -2 which is point (0, -2).

slope:

points (-3, -4) and (3, 0)

m = (y₂ - y₁) / (x₂ - x₁)

= (0 - (-4)) / (3 - (-3))

= 4 / 6

= 2/3

Equation of line using your y-intercept and slope from above:

y = mx + b

y = 2/3x - 2

4 0

2 years ago