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4 years ago

P=a+b+c solve for b c=90x+35

Mathematics

2 answers:

Pavel [41]4 years ago

4 0

Answer:

x=bc-35 over 90

Step-by-step explanation:

MrRissso [65]4 years ago

3 0

P- a plus b plus c solve for b
C- 90*+ 35

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What is 5.704 expressed to two decimal places?

tatuchka [14]

Answer:

5.70, or 5.7.

Step-by-step explanation:

4 is rounded to 70 (4 and below you round down), the 5 stays the same, and then you get 5.70 which you can reduce to 5.7.

3 0

3 years ago

7th Grade Math <br><br> Need help with both 6 and 7

barxatty [35]

Answer:

Part 6)

case a) $P(odd)=\frac{1}{2}=0.5=50\%$

case b) $P(less\ than\ 3)=\frac{0}{8}=0=0\%$

Part 7)

case a) $P(yellow)=\frac{3}{20}=0.15=15\%$

case b) $P(green\ and\ red)=\frac{1}{20}=0.05=5\%$

Step-by-step explanation:

we know that

The probability of an event is the ratio of the size of the event space to the size of the sample space.

The size of the sample space is the total number of possible outcomes

The event space is the number of outcomes in the event you are interested in.

Let

x------> size of the event space

y-----> size of the sample space

$P=\frac{x}{y}$

Part 6)

case a) P(odd)

In this problem we have

$x=4$

$y=8$

substitute

$P=\frac{4}{8}=\frac{1}{2}=0.5=50\%$

case b) P (less than 3)

In this problem we have

$x=0$

$y=8$

substitute

$P=\frac{0}{8}=0=0\%$

Part 7)

case a) P(yellow)

In this problem we have

$x=3$

$y=20$

substitute

$P=\frac{3}{20}=0.15=15\%$

case b) P(green and red)

$P(green)=\frac{5}{20}$

$P(red)=\frac{4}{20}$

therefore

$P(green\ and\ red)=\frac{5}{20}*\frac{4}{20}=\frac{20}{400}=\frac{1}{20}=0.05=5\%$

8 0

3 years ago

A gear with a diameter of 12.0 inches makes 35 revolutions every three minutes. Find the linear and angular velocities of a poin

alina1380 [7]

Answer:

Angular velocity: $\omega = \frac{7\pi}{18} \,\frac{rad}{s}$ ( $1.222\,\frac{rad}{s}$ )

Linear velocity: $v = \frac{14\pi}{3}\,\frac{m}{s}$ ( $14.661\,\frac{m}{s}$ )

Step-by-step explanation:

The gear experiments a pure rotation with axis passing through its center, the angular ( $\omega$ ), in radians per second, and linear velocities ( $v$ ), in inches per second, of a point on the outer edge of the element are, respectively:

$\omega = \frac{2\pi}{60}\cdot \dot n$ (1)

$v = R\cdot \omega$ (2)

Where:

$\dot n$ - Rotation rate, in revolutions per minute.

$R$ - Radius of the gear, in inches.

If we know that $\dot n = \frac{35}{3}\,\frac{rev}{min}$ and $R = 12\,in$ , then the linear and angular velocities of the gear are, respectively:

$\omega = \frac{2\pi}{60}\cdot \dot n$

$\omega = \frac{7\pi}{18} \,\frac{rad}{s}$ ( $1.222\,\frac{rad}{s}$ )

$v = R\cdot \omega$

$v = \frac{14\pi}{3}\,\frac{m}{s}$ ( $14.661\,\frac{m}{s}$ )

7 0

3 years ago

John borrows 12,0000 at a rate of 5% for 4 years. How much will he have to pay back in total?

WINSTONCH [101]

Answer:

who is john

Step-by-step explanation:

do you know her

5 0

3 years ago

sing traditional methods, it takes 108108 hours to receive a basic driving license. A new license training method using Computer

solniwko [45]

Answer:

$z_{stat} = -1.50$

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 108

Sample mean, $\bar{x}$ = 107

Sample size, n = 110

Alpha, α = 0.02

Population standard deviation, σ = 7

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{107 - 108}{\frac{7}{\sqrt{110}} } = -1.50$

The test statistic is -1.50

8 0

3 years ago