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3 years ago

HELP PLEASE

Mathematics

1 answer:

kolbaska11 [484]3 years ago

4 0

Answer:

-4, -1, and 5

Step-by-step explanation:

1. The x-intercepts of a function is where the function intersects with the x-axis.

2. Given the information above, we can see that the function intersects the x-axis at (-4,0), (-1,0), and (5,0).

This means that the x-intercepts are -4, -1, and 5.

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The expression 4X / 5 - 2x / 3 is equivalent to

Ivahew [28]

Is this what you need 4x/ [5-(2x/3)] ?
If yes, then 4x/[(15-2x)/3] = 4x•3/(15-2x) = 12x/(-2x+15)

7 0

4 years ago

16. What is the solution set for: 4x - 3 > 29?

Galina-37 [17]

4x - 3 > 29
+3 on both sides
4x > 31
/4 on both sides
x > 7.75

Answer:
A) x > 8

5 0

3 years ago

Practice: Organizing Information

MArishka [77]

$\sqrt{\frac{a}{b}} = \frac{ \sqrt{a}}{ \sqrt{b}}$
You will often be asked to "rationalize the denominator," in which case
$\sqrt{\frac{a}{b}} = \frac{ \sqrt{ab}}{b}$

$\sqrt{\frac{2}{5}} = \frac{\sqrt{2}}{ \sqrt{5}} = \frac{ \sqrt{10}}{5}$

8 0

3 years ago

Find the length DE. Round your answer to the nearest tenth of a meter

finlep [7]

Answer:

13.8

Step-by-step explanation:

We can use trigonometry to find the length of DE

Remember these are the trigonometric ratios

Sin = Opposite over Hypotenuse

Cos = Adjacent over Hypotenuse

Tan = Opposite over Adjacent

For ∠FDE we are given its opposite side length ( FE ) and need to find its adjacent angle ( DE )

When working with opposite and adjacent we use the trig ratio tangent

That being said we want to create an equation to solve for (DE) ( Recall that tan = opposite over adjacent. ) ( let DE = x )

so $tan(51)=\frac{17}{x}$

now we solve for x

Step 1 multiply each side by x

tan(51) * x = x tan (51)

$\frac{17}{x} *x=17$

now we have x tan (51) = 17

step 2 divide each side by tan (51)

$\frac{xtan(51)}{tan(51)}=x\\\frac{17}{tan(51)}$

we now have

$x =\frac{17}{tan(51)} \\$

$tan(51)=1.234897157\\\frac{17}{1.234897157} =13.76632856$

we're left with x = 13.76632856

Finally we round to the nearest tenth and get that the answer 13.8

6 0

3 years ago

1. There are 15 girls and 12 boys in Mrs. Johnson's mathclass. Express the ratio of boys to girls in simplest form.

kap26 [50]

Answer:

4 :5

Step-by-step explanation:

boys : girls

12 : 15

Divide each by 3

12/3 : 15/3

4 :5

4 0

4 years ago