All categories

3 years ago

Find the sum of 3.8 + (-2.9)

Mathematics

2 answers:

MakcuM [25]3 years ago

6 0

Answer:

3.8 - 2.9= .9

ANSWER : .9

Grace [21]3 years ago

5 0

Answer: 0.9

Step-by-step explanation:

You might be interested in

Use ABC, in which AB = 48, AC = 64, and BC = 80, to answer the question.

Deffense [45]

Answer:

$CosB = \frac{48}{80}$

Step-by-step explanation:

Given

AB = 48, AC = 64, and BC = 80

Required

Determine the ratio of cosB

The first step is to determine, which type of triangle it is.

Checking for Right Angled Triangle

For a triangle to be a right angled triangle, the square of the largest side must be equal to the sum of squares of other sides

This implies that:

$80^2 = 48^2 + 64^2$

$6400 = 2304 + 4096$

$6400 = 6400$

Hence, the triangle is a right angled triangle [See attachment]

From trigonometry;

$CosB = \frac{Adjacent}{Hypotenuse}$

The adjacent of B = 48 while the hypotenuse is 80;

Hence;

$CosB = \frac{48}{80}$

Hence, the ratio of cos B is $CosB = \frac{48}{80}$

4 0

4 years ago

Coopers & Lybrand surveyed 210 chief executives of fast-growing small companies. Only 51% of these executives had a manageme

densk [106]

Answer:

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

Step-by-step explanation:

Given sample size 'n' = 210

The sample proportion 'p' = 51% = 0.51

Confidence intervals are determined by

$(p^{-} - z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} }{n} } , p^{-} +Z_{\alpha } \sqrt{\frac{p^{-} (1-p^{-} )}{n } } )$

The 92% of z-score value

$Z_{\frac{\alpha }{2} } = Z_{\frac{0.08}{2} } = Z_{0.04} = 1.405$

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

$(0.51 - 1.405 \sqrt{\frac{0.51 (1-0.51 }{210} } , 0.51 +1.405 \sqrt{\frac{0.51 (1-0.51)}{210 } } )$

on calculation , we get

(0.51-0.048 , 0.51 + 0.048)

(0.46154 , 0.558)

Final answer:-

92% Of confidence intervals to estimate the proportion of all fast-growing small companies that have a management succession plan.

(0.46154 , 0.558)

3 0

3 years ago

SOMEONE PLEASE HELP ME.

dimaraw [331]

Probability is like 50% or 1/2 like If you flip a coin the probability is 1/2,

3 0

3 years ago

The cost of fencing a circular field at the rate of Rs.24 per metre is Rs. 5280.

7nadin3 [17]

Answer:

radius = 35.03 m

Step-by-step explanation:

5280/24 = circumference = 220 m

220 /Pi = diameter = 70.06 m

70.06/2 = radius = 35.03 m

6 0

3 years ago

Ronny wants to know how often the average resident of his town eats out. He surveys 45 people as they leave the restaurant. Iden

irinina [24]

Answer:

Ronny would use a bar graph.

Step-by-step explanation:

Using a bar graph would show Ronny exactly how often his residents would eat out.

5 0

3 years ago

Read 2 more answers