Who Got zoom can help me with 9th grade math And this needs to be done in 20 MINS

Given below are lease terms at the local dealership. What is the total cash

Ludmilka [50]

Answer:

$2900

Step-by-step explanation:

• Length of lease = 36 months

• MSRP of the car = $22,750

• Purchase value of the car after lease = $16,900

• Down payment = $1800

• Monthly payment = $425

• Security deposit = $375

• Acquisition fee = $300

The amounts in bold above (last 4 lines) are usually due at signing. Usually there is also sales tax, but that is not mentioned here.

Total due at signing: $1800 + $425 + $375 + $300 = $2900

Answer: $2900

6 0

3 years ago

What is the polynomial function in standard form of f(x)=2-11x 2x²

vlabodo [156]

Standard form is f(x)=ax^2+bx+c
order of power
f(x)=2x^2-11x+2

4 0

2 years ago

Suppose the national mean SAT score in mathematics was 510. In a random sample of 60 graduates from Stevens High, the mean SAT s

zalisa [80]

Answer:

We accept the alternate hypothesis and conclude that mean SAT score for Stevens High graduates is not the same as the national average.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 510

Sample mean, $\bar{x}$ = 502

Sample size, n = 60

Sample standard deviation, s = 30

Alpha, α = 0.05

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 510\\H_A: \mu \neq 510$

We use Two-tailed t test to perform this hypothesis.

Formula:

$t_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{s}{\sqrt{n-1}} }$ Putting all the values, we have

$t_{stat} = \displaystyle\frac{502- 510}{\frac{30}{\sqrt{60}} } = -2.0655$

Now,

$t_{critical} \text{ at 0.05 level of significance, 59 degree of freedom } = \pm 1.671$

Since,

$|t_{stat}| < |t_{critical}|$

We reject the null hypothesis and fail to accept it.

We accept the alternate hypothesis and conclude that mean SAT score for Stevens High graduates is not the same as the national average.

7 0

3 years ago

Can someone please help me solve these two problems and explain them to me? About the one with proportions though... I've always

NeTakaya

Answers:

A) $-\frac{11}{4}$

C) $m_{1}=\frac{Fr^{2}}{G m_{2}}$

Step-by-step explanation:

We have the followig equation:

$\frac{x-1}{3}-\frac{x+4}{5}=\frac{4x-1}{8}$

Calculating the least common multiple (l.c.m) in the denominator in the left side of the equation, being l.c.m=15:

$\frac{5(x-1)-3(x+4)}{15}=\frac{4x-1}{8}$

Solving for the left part of the equation:

$\frac{2x-17}{15}=\frac{4x-1}{8}$

Operating with cross product:

$8(2x-17)=15(4x-1)$

Applying the distributive property:

$16x-136=60x-15$

Isolating $x$ :

$x=-\frac{121}{44}$

Dividing numerator and denominator by 11:

$x=-\frac{11}{4}$ Hence, the correct option is A

We have the followig equation:

$F=\frac{G m_{1} m_{2}}{r^{2}}$

Operating with cross product:

$Fr^{2}=G m_{1} m_{2}$

Isolating $m_{1}$ :

$m_{1}=\frac{Fr^{2}}{G m_{2}}$ Hence, the correct option is C

5 0

3 years ago

Topic:Mixed Power Problems

ale4655 [162]

=(3x^3-y^2)^2 [ open it in (a-b)^2 form]

=(3x^3)^2-2.3x^3.y^2+(y^2)^2

=3^2x^3×2-6x^3y^2+y^2×2

=9x^6-6x^3y^2+y^4. ans

7 0

2 years ago