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3 years ago

NEED HELP WITH THIS PLEASE

Mathematics

2 answers:

frosja888 [35]3 years ago

8 0

Answer:

Step-by-step explanation:

-25+25=0+50=50

25+50=75

marin [14]3 years ago

7 0

Answer:

-25 + 75 = 50

Step-by-step explanation:

Since we don't know the value of the bar, we will call it x.

-25 + x = 50

Add 25 to both sides to find the value of x.

x = 75

You can also double check this answer by doing simple math.

-25 + 75 = 50

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Determine the margin of error in estimating the population mean, μ . A sample of 74 college students yields a mean annual income

Julli [10]

Answer:

$253

Step-by-step explanation:

Margin of error is the critical value times the standard error.

MoE = z × σ/√n

At 99% confidence, z = 2.576.

MoE = 2.576 × 844/√74

MoE = 253

7 0

4 years ago

What is the answer? pls help i'm not sure

Sonbull [250]

Answer:

I don't think It is a line.

Step-by-step explanation:

6 0

3 years ago

The area of a triangular flag is 132 square centimetres. Its altitude is 2 centimetres longer than twice its base. Find the leng

Anika [276]

Answer:

24 cm and 11 cm

Step-by-step explanation:

GIVEN: The area of a triangular flag is $132 \text{ cm}^2$ . Its altitude is $2\text{ cm}$ longer than twice its base.

TO FIND: lengths of the altitude and the base.

SOLUTION:

Let the altitude and the base of flag be $a$ and $b$

According to the question

$a=2+2b$

area of triangle $=\frac{1}{2}\times base \times alltitude=\frac{1}{2}a\times b$

$\implies \frac{1}{2}(2b+2)b=132 \Rightarrow 2b^2+2b-264$

Solving equation we get

$b=11$ then $a=24$

Hence the lengths of altitude and base of triangular flag is 24 cm and 11 cm respectively.

8 0

3 years ago

Multiple Choice Evaluate. 1. -59 - 6 for g=-2 (1 point) A.4 B.16 C.10 D.-13

Sergeeva-Olga [200]

Answer: A. 4

Im in high school this is simple math so. Your welcome

4 0

4 years ago

Read 2 more answers

7) y is inversely proportional to the square root of (x + 1).

Virty [35]

Mark Brainliest please

Answer y= 16/99

Explanation:
the initial statement is
y ∝ 1/x

To convert to an equation multiply by k the constant of variation
⇒ y = k × 1/x = k/x
To find k use the given condition y = 15 when x = 5

y = k/ x

⇒ k = y*x = 8 * 2 =16

equation is
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

y = 16/ x

when
x = 99
then

y = 16/99

Y = 16/99

3 0

3 years ago