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3 years ago

Please help!! Choosing brainliest!!

Mathematics

1 answer:

Zigmanuir [339]3 years ago

6 0

Answer: A and D

Step-by-step explanation:

Table B : not a function the value of x=3 has two images

Table C: not a function the value of x=1 has two images

Tables A and D are functions

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Find the area of a rectangle with a length of 4 5/8 inches and a width of 1/2 inch? Is it A. 16/37 in2, B. 37/16 in2, C. 37/2 in

dybincka [34]

Area is length times width. Our length and width are 4 5/8 and 1/2 respectively, so the formula for the area is $A=4 \frac{5}{8}* \frac{1}{2}$ . It will be easier to get that mixed fraction into an improper one and then multiply the fractions straight across the top and straight across the bottom. $A= \frac{37}{8}* \frac{1}{2}$ . Doing that multiplication gives us $A= \frac{37}{16}$ , choice B.

5 0

3 years ago

HELLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPP!!! 98POINTS

Mnenie [13.5K]

Answer:

$1699.25

Step-by-step explanation:

Data:

Cost = $314 000

Down payment = 18 %

Term = 20 yr

i = 5 %/yr

Calculations:

(a) Down payment

Down payment = 314 000 × 0.18

= $56 520

(b) Amount financed

Cost = $314 000

-Down payment = 56 520

Financed = $257 480

(c) Monthly payments

The formula for the monthly payment (P) on a loan of A dollars that is paid back in equal monthly payments over n months, at an annual interest rate of i % is

$P = A(\frac{i}{1-(1+i)^{-n}})$

We must express the interest rate on a monthly basis.

I = 5 %/yr = 0.41 667 %/mo = 0.004 1667

n = 2 × 12 = 240 mo

$P = 257 480(\frac{0.004 1667}{1 - (1+0.004 1667)^{-240}})$

$P = \frac{1072.83}{1- (1.004 1667)^{-240}}$

$P = \frac{1072.83}{1 - 0.368 645}$

$P = \frac{1072.83}{0.631 355}$

P = $1699.25

Carlos' monthly mortgage payment will be $1699.25.

8 0

3 years ago

2.use the scatter plot in problem 1 to decide whether each statement is true or false

andrey2020 [161]

Answer:

A)False

B)False

C)False

8 0

3 years ago

Read 2 more answers

WILL MARK AS BRAINLIEST! Thank you!

Sidana [21]

Answer:

52.5

Step-by-step explanation:

ur welcome,,,,,,

8 0

3 years ago

Determine whether f(x) =3x^2+9x-2 has a maximum of a minimum value and find that value by hand.

xenn [34]

f(x) =3x^2+9x-2 has a minimum value. Minimum value of f(x) is $\frac{-35}{4}$

Solution:

Given, equation is $f(x)=3 x^{2}+9 x-2$

We have to find whether given equation has maximum or minimum for the given equation.

Now, we know that, f(x) is a quadratic equation and coefficient has $x^2$ is positive, then its graph is upward parabola. Which means that it will have minimum

The minimum value upward parabola will be its vertex.

So, let us convert f(x) into general form. That is,

$f(x)=a(x-h)^{2}+k$

where a is constant and (h, k) is vertex

$\text { Now }_{,} f(x)=3 x^{2}+9 x-2$

$\text { Adding and subtracting } \frac{27}{4} \text { for easier calculations }$

$f(x)=3 x^{2}+9 x+\frac{27}{4}-\frac{27}{4}-2$

Taking "3" as common from first three terms,

$f(x)=3\left(x^{2}+3 x+\frac{9}{4}\right)-\frac{27}{4}-2$

Now multiply and divide “2” with “3x” for easier calculations

$f(x)=3\left(x^{2}+2 \times \frac{3}{2} \times x+\left(\frac{3}{2}\right)^{2}\right)-\frac{27+2 \times 4}{4}$

$\begin{array}{l}{\text { By using }(a+b)^{2}=a^{2}+2 a b+b^{2}, \text { we get }} \\\\ {\left(x^{2}+2 \times \frac{3}{2} \times x+\left(\frac{3}{2}\right)^{2}\right)=\left(x+\frac{3}{2}\right)^{2}}\end{array}$

$f(x)=3\left(x+\frac{3}{2}\right)^{2}-\frac{35}{4}$

So, by comparison with general form we get,

$\mathrm{h}=-\frac{3}{2} \text { and } \mathrm{k}=\frac{-35}{4}$

$\text { Here, }(\mathrm{h}, \mathrm{k})=(\mathrm{x}, \mathrm{f}(\mathrm{x}))=\left(\frac{-3}{2}, \frac{-35}{4}\right)$

$\text { So, minimum value of } f(x) \text { is } \frac{-35}{4}$

5 0

3 years ago