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2 years ago

Can anyone help me figure out this question?

Mathematics

1 answer:

Strike441 [17]2 years ago

7 0

Y = 3x - 1

As x increases by 1, y increases by 3

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PLZ HELP ASAP!!!!! Show all work

Gnom [1K]

Answer:

a) 198.7% interest

Not too sure about answer to (b)

b) 4.75% annualized

Step-by-step explanation:

a) i used Interest = Principal x Rate x Time

40 = 525 x $\frac{14}{365}$ x r

40 = 20.13r

r = 1.987 or 198.7%

b) i used this proportion: $\frac{1.98}{1/24}$ = $\frac{x}{1}$ 'x' represents annualized rate

1/24 represents 2 weeks out of a year

1/24x = 1.98

x = 4.75%

4 0

3 years ago

The cost of eight stress balls and five T-shirts is $111.75. The cost of twelve stress balls and four T-shirts is $102.00. What

aksik [14]

Let's say stress ball cost x and t shirt cost y
8x+5y=111.75
12x+4y=102.00→3x+y=25.5→y=25.5-3x

8x+5(25.5-3x)= 111.75
8x+127.5-15x=111.75
-7x=-15.75
x=2.25

12x+4y=102
12(2.25)+4y=102
27+4y=102
4y=75
y=18.75

d is the correct answer

6 0

3 years ago

Please help What is the sum of (2.3 × 10') and (5.0 x 10%) ?

lyudmila [28]

Answer:

i correct answer would be A

Step-by-step explanation:

i hope this helps

plz mark brainliest

3 0

3 years ago

The formula p=8n-30 gives the profit p when a number of items n are each sold at $8 and expenses totaling $30 are subtracted

Vlad [161]

The profit here has decreased by $10. We can work this out through the following equation -
170= 8n-30= 200= 8nn=25B: P= 8(25) - 40= 200 - 40P= 160

3 0

3 years ago

Write an equation that is perpendicular to y=5x−4 and goes through the point (10, -1)

d1i1m1o1n [39]

Answer:

Equation of the perpendicular line is $y=-\frac{1}{5}x+1$

Step-by-step explanation:

Given equation is y = 5x - 4

By comparing this equation with slope-intercept form of the equation,

y = mx + b

Slope of this line $m_{1}=5$

Let the slope of the perpendicular line = $m_{2}$

By the property of perpendicular lines,

$m_{1}\times m_{2}=(-1)$

$5\times m_{2}=(-1)$

$m_{2}=-\frac{1}{5}$

Equation of the perpendicular line passing through a point $(x_{1}, y_{1})$ and slope m is represented by

$y-y_{1}=m(x-x_{1})$

If the given point is (10, -1) and slope 'm'= $-\frac{1}{5}$

$y+1=-\frac{1}{5}(x-10)$

$y=-\frac{1}{5}x+2-1$

$y=-\frac{1}{5}x+1$

8 0

4 years ago