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3 years ago

Can some one show me the steps to get the answer it’s a test and I need help

Mathematics

1 answer:

Leokris [45]3 years ago

7 0

Step by Step Answer:
Make a Graph and label the y axis investment and the x axis year
On the y axis start at 4000 and on the x axis start at 1 then continue to 5
Figure out what 7.5% of 4000 is than add 4000 to it and there you have your second y axis point
then you just continue after that

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Lisa's age is 4 yrs. older than three times Sammy's age. Lisa is 28 yrs. old. Let's represent Sammy's age.

masha68 [24]

Answer:

Step-by-step explanation:

So it'd be

28=3s+4

28-4=3s

24=3s

24/3=3s/3

8=2

8 0

2 years ago

Read 2 more answers

PLS HELP WILL GIVE BRAINLIEST :)

Rus_ich [418]

Step-by-step explanation:

the slope intercept form is

y = ax + b

"a" being the slope, "b" being the y- intercept (which is the y-value when x = 0).

the slope here :

in the table x is always increasing by 2.

and y is always investing by 1.

so, the slope is 1/2

the y-intercept :

we need to find the y-value for x = 0.

but we don't have a data point with x = 0 in the table.

so, we have to extend the structure of the table to the left.

x decreases by 2 (making it 0), and y decreases by 1 (making it -1).

therefore, the y- intercept (b) is -1.

and the line equation is

y = (1/2)x - 1

not sure about "the other method".

there is the point-slope form of the equation :

y - y1 = a(x - x1)

again with "a" begin the slope, and (x1, y1) being a point on the line.

if we get the y-intercept in the table, then this point is (0, y1).

and the equation would be

y - y1 = ax

in our case

y + 1 = (1/2)x

and another method ?

sometimes people write

nx + my = c

in our case starting with the original equation

y = (1/2)x - 1

2y = x - 2

-x + 2y = -2

x - 2y = 2

6 0

2 years ago

Find the slope in fraction form

nlexa [21]

Answer:

-1/3

Step-by-step explanation:

Taking two points on the graph (I took (0,9) and (6,7)

Slope=(y2-y1)/(x2-x1)

(7-9)/(6-0)=-2/6

=-1/3

7 0

3 years ago

Read 2 more answers

Write the standard form of the equation of the line through the given points.

fenix001 [56]

You first have to find the slope using the slope formula. That looks like this with our values: $\frac{-2-(-1)}{5-(-3)}=- \frac{1}{8}$ . So the slope is -1/8. Use one of the points to first write the equation in y = mx + b form. We have an x and a y to use from one of the points and we also have the slope we just found. Filling in accordingly to solve for b gives us $-2=5(- \frac{1}{8})+b$ and $-2=- \frac{5}{8}+b$ . Adding 5/8 to both sides and getting a common denominator gives us that $b=- \frac{11}{8}$ . Writing our slope-intercept form we have $y=- \frac{1}{8}x- \frac{11}{8}$ . Standard form for a line is Ax + By = C...no fractions allowed. So let's get rid of that 8 by multiplying each term by 8 to get 8y = -x - 11. Add x to both sides to get it into the correct form: x + 8y = -11

5 0

3 years ago

Find value of x of question number F

a_sh-v [17]

Answer:

X=17

Step-by-step explanation:

AC^2=AB^2 +BC^2(PYTHAGOREAN THEORM)

100=64 +BC^2

36=BC^2

6CM=BC

AD^2=AB^2+BD^2(PYTHAGOREAN THEORM)

X^2 =64+225

X^2=289

X=17

6 0

2 years ago