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Phantasy [73]
3 years ago
14

Help please !! I really need help

Mathematics
1 answer:
igomit [66]3 years ago
7 0
1. 24.8
2. 7.2
3. 13.7
4.36.2
5.10.3
6. 4 I think I’m not really good at word problems
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Find the common ratio for the geometric sequence defined by the formula: an=40(2–√)n−1
Maksim231197 [3]

Answer:

b is the answer in your questions

3 0
3 years ago
Write the given roots to quadratic equation
Svet_ta [14]

Answer:

α + β = - ba and αβ = ca.

⇒ x2 + bax + ca = 0 (Since, a ≠ 0)

⇒ x2 - (α + β)x + αβ = 0, [Since, α + β = -ba and αβ = ca]

Step-by-step explanation:

pls mark brainlist

4 0
3 years ago
Read 2 more answers
Dorian is spreading mulch on his triangular flowerbed. If the base is 8 feet and the height is 6 feet. How many square feet of m
katovenus [111]

Answer:

24 square feet

Step-by-step explanation:

Given:

Dorian is spreading mulch on his triangular flowerbed.

The base is 8 feet.

The height is 6 feet.

Question asked:

How many square feet of mulch will he need for the flowerbed?

Solution:

The base of  triangular flowerbed = 8 feet.

The height of  triangular flowerbed = 6 feet.

now, to find how many square feet of mulch he will need for the flowerbed, we will find area of the triangular flowerbed:-

As we know:

Area\ of\ triangle=\frac{1}{2} \times base\times height

                           =\frac{1}{2} \times8\times6\\\\ =\frac{48}{2} \\ \\ =24\ square\ feet

Thus, 24 square feet of mulch he will need for the flowerbed.

8 0
3 years ago
A new surgery is successful 75% of the time. if the results of 10 such surgeries are randomly sampled, what is the probability t
valentinak56 [21]
\text{Binomial Distribution: } P(X = r) = \binom{n}{r}(p)^{r}(1 - p)^{n - r}
P(X < 9) = 1 - P(X = 9) - P(x = 10)

P(X = 9) = \binom{10}{9}(0.75)^{9}(0.25)
P(X = 10) = \binom{10}{10}(0.75)^{10}

P(X < 9) = 1 - \binom{10}{9}(0.75)^{9}(0.25) - \binom{10}{10}(0.75)^{10}
\approx 0.755974769...
4 0
4 years ago
Ms. Bezel, the jewelry designer, ordered 500 grams of silver, 800 grams of brass, and 700 grams of copper. How many kilograms of
jeka94

Answer:

2 kilograms

Step-by-step explanation:

500 + 800 + 700 is 2000g

There are 1000 grams in a kilogram

so the answer is 2 kilograms

4 0
3 years ago
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