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Soloha48 [4]
2 years ago
5

Please help me with this??

Mathematics
1 answer:
Ludmilka [50]2 years ago
6 0

Answer:

c, d and f are rational numbers

Step-by-step explanation:

c) 3\sqrt{5}*2\sqrt{5}=3*2*\sqrt{5*5} = 3*2*5 = 30\\\\\\d)  \dfrac{3\sqrt{5}}{2\sqrt{5}}= \dfrac{3}{2}\\\\\\f)  \dfrac{2\sqrt{5}}{3\sqrt{5}}= \dfrac{2}{5}

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Simplify 8 (y +1 ) - 2 (x + 3)
melomori [17]

Answer:

8y - 2x + 2

Step-by-step explanation:

Distribute;

8y + 8 - 2x - 6

Combine like terms;

8y - 2x + 2

8 0
3 years ago
Read 2 more answers
QUESTION ON PIC THANK YOU !!!
AlexFokin [52]
Triangle a - acute
Triangle b - acute
Triangle c - acute
Triangle d - right
8 0
2 years ago
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on Saturday nikki and tyler walked to the local farmers market nikki bout 8 apples for $6 dollars and tyler brought 3 fewer appl
erica [24]

On Saturday Nikki and Tyler walked to the local farmers market Nikki bought 8 apples for $6 dollars and Tyler brought 3 fewer apples than Nikki. How much did Tyler spend on apples?​

Tyler brought 8 apples - 3 apples = 5 apples.​

​To calculate the price of 5 apples we have to establish a proportion :

If 8 apples cost $6​

Then 5 apples will cost $X​

​X = 5apples * $6/8apples = $3.75

​Answer : Tyler spent on apples $3.75

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4 0
3 years ago
I will mark as brainliest
AnnZ [28]

1 1/2 teaspoons...

A Dozen= 12

5 Dozen= 60

4 Dozen requires 1 teaspoon then add the half which equals 1 1/2 teaspoons


Hope it helped!!!

3 0
3 years ago
Read 2 more answers
Write the equation of a parabola whose directrix is y=9.75 and has a focus at (8, 0.25).
lana [24]

Answer:

y = (-1/19)(x - 8)² + 1521/76

Step-by-step explanation:

A parabola moves in such a way that it's distance from it's focus and directrix are always equal.

Now, we are given that directrix is y = 9.75 and focus is at (8, 0.25). Focus can be rewritten as (8, ¼) and directrix can be rewritten as y = 39/4

If we consider a point with the coordinates (x, y), it means the distance from this point to the focus is;

√((x - 8)² + (y - ¼)²)

Distance from that point to the directrix is; (y - 39/4)

Thus;

√((x - 8)² + (y - ¼)²) = (y - 39/4)

Taking the square of both sides gives;

((x - 8)² + (y - ¼)²) = (y - 39/4)²

(x - 8)² + y² - ½y + 1/16 = y² - (39/2)y + (39/4)²

Simplifying this gives;

(x - 8)² - (39/4)² = (½ - 39/2)y

(x - 8)² - 1521/4 = -19y

(x - 8)² - 1521/4 = -19y

Divide both sides by -19 to get;

y = (-1/19)(x - 8)² + 1521/76

6 0
2 years ago
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