All categories

3 years ago

What word problem can be created from equation 3x=42

Mathematics

1 answer:

avanturin [10]3 years ago

5 0

Answer:

Three multiplied by X equals 42.

Also, not sure if you need this, but, X=14

You might be interested in

help me pls! The radius of Circle A is 7 mm. The radius of Circle B is 5 mm greater than the radius of Circle A. The radius of C

bazaltina [42]

Answer:

3.45 times

Step-by-step explanation:

530.93/153.94 = 3.4489411459

5 0

2 years ago

A train traveling nonstop to its destination is able to make the trip at an average speed of 70 miles per hour. On the return tr

larisa86 [58]

Answer:

Return trip travel time: 7h

Step-by-step explanation:

Let d be the distance.

Index 1 refers to initial trip, index 2 refers to the return trip.

v1=70mi/h

v2=40mi/h

t2=t1+3h, or t1=t2-3h (travel times)

d=v1×t1=v2×t2

v1×(t2-3)=v2×t2

v1 t2 -3 v1=v2 t2

v1 t2 - v2 t2=3 v1

t2(v1-v2)=3v1

t2=3v1/(v1-v2)

t2=3×70/(70-40)=3×70/30=7h

3 0

3 years ago

What is the value of (-3.25)(-1.56) with the work shown

MAVERICK [17]

All you have to do is multiply: -3.25•-1.56=5.07. A negative times a negative is a positive :)

3 0

3 years ago

Suppose a polling agency reported that 44.4% of registered voters were in favor of raising income taxes to pay down the nationa

g100num [7]

Answer:

95% of confidence interval for the proportion of registered voters who are in favor of raising income taxes to pay down the national debt.

(0.414 ,0.474)

Step-by-step explanation:

Step(i):-

Given sample proportion

p⁻ = 44.4 % = 0.444

Random sample size 'n' = 1049

Given margin of error for 95% confidence level = 3 % = 0.03

Step(ii):-

95% of confidence interval for the proportion is determined by

$(p^{-} - Z_{\alpha }\sqrt{\frac{p^{-} (1-p^{-} }{n} } , p^{-} + Z_{\alpha }\sqrt{\frac{p^{-} (1-p^{-} }{n} })$

we know that

Margin of error for 95% confidence level is determined by

$M.E = Z_{\alpha }\sqrt{\frac{p^{-} (1-p^{-}) }{n} }$

Step(iii):-

Now

95% of confidence interval for the proportion is determined by

$(p^{-} - M.E, p^{-} + M.E)$

Given Margin of error

M.E = 0.03

Now 95% of confidence interval for the proportion

$(0.444 - 0.03, 0.444+ 0.03)$

(0.414 ,0.474)

Conclusion:-

95% of confidence interval for the proportion of registered voters who are in favor of raising income taxes to pay down the national debt.

(0.414 ,0.474)

6 0

3 years ago

What is the slope of the line on the graph?

sweet-ann [11.9K]

Answer:

Step-by-step explanation:

(y1-y2)/(x1-x2) = (-1-5)/(0-1) = -6/-1 = 6

3 0

3 years ago