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3 years ago

45% of the fish in a shop is marlin. The remainder is dolphin. If there are 110 dolphins how many marlin are in the shop ?

Mathematics

2 answers:

Lynna [10]3 years ago

5 0

55% - 110 (dolphin)
45% - 90 (marlin)

Maths:
110 divided by 55 = 2
1% is 2
45 x 2 = 90

nordsb [41]3 years ago

4 0

This is a tricky one! All I know is that 45% of 110 is 49.5. You can work it out from there if you want.

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Answer:

Step-by-step explanation:

Given

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3 years ago

A population of flies, P, over a given amount of time, x, is modeled by the expression

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just olya [345]

Answer:

$48 {m}^{5} {n}^{6}$

Step-by-step explanation:

$6{m}^{3} {n}^{3} \times 8 {m}^{2} {n}^{3}$

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2 years ago

Find the average rate of change of f(x)=2x-1 from x=-1 to x=2

MrMuchimi

The average rate of change from x = -1 to x = 2 is 2

Solution:

Given function is:

f(x) = 2x - 1

We have to find the average rate of change from x = -1 to x = 2

The average rate of change is given as:

$\text {Average rate of change}=\frac{f(b)-f(a)}{b-a}$

The average rate of change from x = -1 to x = 2 is given by formula:

$\text {Average rate of change}=\frac{f(2)-f(-1)}{2-(-1)}\\\\\text {Average rate of change}=\frac{f(2)-f(-1)}{3}$

Find f(2) and f( - 1)

Substitute x = 2 in given function

f(2) = 2(2) - 1 = 4 - 1 = 3

Substitute x = -1 in given function

f( - 1) = 2(-1) - 1 = -2 - 1 = -3

Substitute the values in above formula,

$\text {Average rate of change}=\frac{3-(-3)}{3}=\frac{6}{3}=2$

Thus average rate of change from x = -1 to x = 2 is 2

3 0

2 years ago

Show that the two triangles given beside are similar and calculate the lengths of sides PQ and PR.

Rina8888 [55]

9514 1404 393

Answer:

ΔABC ~ ΔPQR
PQ = 8
PR = 14

Step-by-step explanation:

Angles A and P are marked congruent; angles B and Q are marked congruent, so the triangles are similar by the AA similarity postulate. The similarity statement can be written ...

ΔABC ~ ΔPQR by AA similarity

The ratio of sides of PQR to ABC is the ratio QR/BC = 12/6 = 2. That is, each side in the larger triangle is 2 times the length of the corresponding smaller side.

PQ = 2·AB = 2·4 = 8

PR = 2·AC = 2·7 = 14

The side lengths of interest are ...

PQ = 8, PR = 14

5 0

2 years ago