All categories

2 years ago

There is a bag with only red marbles and blue marbles.

Mathematics

1 answer:

9966 [12]2 years ago

7 0

Answer:

There are 60 marbles in the bag

Step-by-step explanation:

The total number of marbles times the probability of red marbles = number of red marbles

total * 7/10 = 42

Multiply each side by 10/7

total * 7/10 * 10/7 = 42*10/7

total

There are 60 marbles in the bag

You might be interested in

The area of a circle is 497 squared meters.<br> What is the radius, in meters?

frutty [35]

Answer: r= 12.58m

Step-by-step explanation:

100% SURE

7 0

3 years ago

PLZ HELP ASAP What is the value of the expression below? Negative 50 + 51

saveliy_v [14]

Answer: 1

Explanation: Doing -50+51 is essentially the same as 51-50

4 0

3 years ago

Read 2 more answers

Bekah is looking to find a close condo to the university campus. She learns that the mean rent for a condo is \$1900, and the st

saul85 [17]

Answer:

68.268%

Step-by-step explanation:

We solve using z score formula

z = (x-μ)/σ, where

x is the raw score

μ is the population mean = $1900

σ is the population standard deviation = $200

For x = $1700

z = $1700 - $1900/$200

z = -1

Probability value from Z-Table:

P(x= 1700) = 0.15866

For x = $2100

z = $2100 - $1900/$200

= 1

Probability value from Z-Table:

P(x = 2100) = 0.84134

The probabilty of the population that has a rent price between $1700 and $2100

P(x = 2100) - P(x = 1700)

0.84134 - 0.15866

= 0.68268

Converting to percentage

= 0.68268 × 100%

= 68.268%

The percentage of the population that has a rent price between $1700 and $2100 is 68.268%

3 0

3 years ago

Simplify. 1/3(1−1/4)^2 Enter your answer, as a simplified fraction, in the box.

Slav-nsk [51]

Remember that $(\frac{a}{b})^c=\frac{a^c}{b^c}$

simplify inside parentahsees first

1-1/4=3/4

1/3(3/4)^2=
$(\frac{1}{3})(\frac{3}{4})^2=$
$(\frac{1}{3})(\frac{3^2}{4^2})=$
$(\frac{1}{3})(\frac{9}{16})=$
$\frac{9}{48}=$
$\frac{3}{16}=$

3 0

3 years ago

Read 2 more answers

Divide the two polynomials using long division. Then fill in the blanks below.

Ann [662]

The division of the polynomial 9x² - 6x - 8 by the polynomial 3x + 2 gives a quotient of 3x - 4 with no remainder

<h3>How to carry out the long division?</h3>

The given parameters are:

Dividend = 9x² - 6x - 8
Divisor = 3x + 2

To carry out the division, we continue dividing the leading term of the dividend by the leading term of the divisor

At the end of each division step, the quotient is multiplied by the divisor and the result of the product is subtracted from the dividend.

Using the above step, the result of the division is:

Quotient = 3x - 4

Remainder = 0

See attachment for the steps of the long division