3 years ago

Need an answer to both please

Mathematics

1 answer:

ANTONII [103]3 years ago

6 0

Plz mark me the braniliest

Answer:

1st answer: 52 serves

2nd answer: $8.40

Step-by-step explanation:

1st: 80 times 65 equals 5,200 divided by 100 equals 52

2nd: 42 times 0.20 equals 8.4 or 8.40

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Plz help me with this

Jlenok [28]

Answer: $\bold{b)\quad \dfrac{-\sqrt{13}-5}{4}}$

Step-by-step explanation:

$\dfrac{3}{\sqrt{13}-5}\bigg(\dfrac{\sqrt{13}+5}{\sqrt{13}+5}\bigg)\\\\\\=\dfrac{3(\sqrt{13}+5)}{13-25}\\\\\\=\dfrac{3(\sqrt{13}+5)}{-12}\\\\\\=\dfrac{\sqrt{13}+5}{-4}\\\\\\=\dfrac{-\sqrt{13}-5}{4}$

6 0

2 years ago

Which point is an x-intercept of the quadratic function

daser333 [38]

The x-intercept of f(x) = (x + 6)(x - 3)
f(x) = 0 → (x + 6)(x - 3) = 0 → x + 6 =0 or x - 3 =0
x = -6 or x = 3
Therefore the x-intercepts are: (-6; 0) and (3; 0)
Your answer is (-6; 0)