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3 years ago

HELP WILL GIVE BRANLIEST

Mathematics

1 answer:

max2010maxim [7]3 years ago

7 0

Answer:

Step-by-step explanation:

B makes more sense to me.. If it comes out wrong I deeply apologize-

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Find the area of the following figure..

Marina86 [1]

Answer:

456 $cm^{2}$

Step-by-step explanation:

Find the height of the trapezoid first (QR):

$\sqrt{37^{2} -35^{2} }$ = 12

QR = 12

Area:

$\frac{a+b}{2}$ × h = $\frac{35+41}{2}$ × 12

= 456 $cm^{2}$

5 0

2 years ago

What are the coordinates of A'?

alexandr402 [8]

Answer:

(6,-2)

Step-by-step explanation:

The picture as shown, A would be flipped across the line which leaves it landing on (6,-2)

Hope this helped you :)

3 0

3 years ago

Find the following, giving your answers to 1 decimal place?

sweet [91]

Answer:

I. Volume = 301.6 cm³ (to 1d.p)

II. CSA = 188.5 cm² (to 1d.p)

Step-by-step explanation:

Given the following data;

Height, h = 8cm

Radius, r = 6cm

Curved length = 10cm

a. To find the volume of the cone

$V = \frac{1}{3} \pi r^{2}h$

Where;

V is the volume of the cone.

r is the radius of the base of the cone.

h is the height of the cone.

Substituting into the equation, we have;

$Volume = \frac{1}{3} * 3.142*6^{2}*8$

$Volume = \frac{1}{3} * 3.142*36*8$

$Volume = 3.142*12*8$

Volume = 301.6 cm³ (to 1d.p)

b. The curved surface area of the cone

$CSA = \pi rl$

Where;

CSA is the curved surface area of the cone.

r is the radius of the base of the cone.

l is the curved length of the cone.

Substituting into the equation, we have;

$CSA = 3.142*6*10$

CSA = 188.5 cm² (to 1d.p)

8 0

3 years ago

What represents the equal number of parts that equal a whole in a fraction.

Alex

This refers to the "denominator" of a fraction. By definition, the denominator tells you how many you need to have of an equal part in order to create a whole. The numerator tells you how much of those equal parts you have.

7 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