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Brums [2.3K]
3 years ago
13

What is the value of f(–1)?

Mathematics
1 answer:
Nuetrik [128]3 years ago
7 0

Answer:

f\left(-1\right)=-f\\

Step-by-step explanation:

\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a\\=-f\cdot \:1\\\\\mathrm{Multiply:}\:f\cdot \:1=f\\=-f

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The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square i
77julia77 [94]

The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square inches. Which equation below could be used to find h, the height of this prism, in inches?

The base of a prism has an area of 27 square inches and a perimeter of 36 inches. The surface area of this prism is 144 square inches. Which equation below could be used to find h, the height of this prism, in inches?

5 0
3 years ago
What is the common difference or common ratio for the sequence: 27, 9, 3, 1, 1/3, ...
lawyer [7]

Answer:

It's dividing by 3 everytime, so 1/3

Step-by-step explanation:

4 0
3 years ago
The length of a metal rod is 9 3/4 feet. What is the length of 1/4 the rod?
Paha777 [63]
I think it would be 3 1/4 ft.

5 0
3 years ago
Read 2 more answers
Correct answer gets 5 stars and brainliest
Katena32 [7]

Answer:

Step-by-step explanation:

C(3 , -2)   & D (7, -8)

Distance = \sqrt{(x_{2}-x_{1})^{2}+(y_{2}-y_{1})^{2}}

CD = \sqrt{(7-3)^{2}+(-8-(-2))^{2}}\\\\=\sqrt{(7-3)^{2}+(-8+2)^{2}}\\\\=\sqrt{(4)^{2}+(-6)^{2}}\\\\=\sqrt{16+36}\\\\=\sqrt{52}\\\\

≈ 7.2 units

5 0
3 years ago
A newspaper published an article about a study in which researchers subjected laboratory gloves to stress. Among 260 vinyl​ glov
yawa3891 [41]

Answer:

Step-by-step explanation:

pop 1 n₁ = 260, p₁ = 58% = 0.58

pop 2 n₂ = 260, p₂ = 8% = 0.08

Null hypothesis: p₁ ≤ p₂

Alternative hypothesis: p₁ > p₂

The test statistic : p₁-p₂ / √{p-sample (1 - p-sample) (1/n₁ + 1/n₂)}

where p-sample is sample proportion = p₁n₁ +p₂n₂ / n₁+n₂

Thus, p-sample = 0.58x260 +0.08x260 / 260+260 =150.8+20.8 / 520 = 171.6 / 520 = 0.33.

Thus, the test statistic is (0.58 - 0.08) / √[0.33 (1-0.33) (0.0038+0.0038)

  = 0.5 / √[0.33(0.67) (0.0076)

= 0.5 / √0.00168036

= 0.5 / 0.04099

= 12.20

P = P(Z>12.20) = 1-P(Z≤12.20) at a significance level of 0.1= the p-value is less than the hypothesized thus, we have sufficient evidence to reject the null hypothesis and concluding that vinyl gloves have a greater virus leak than latex gloves.

5 0
3 years ago
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