All categories

3 years ago

If m 2

Mathematics

2 answers:

denpristay [2]3 years ago

5 0

Answer:

x = 1 and y = 4

Step-by-step explanation:

m² = 7x + 7; m³= 4y and m∧4 = 112

√(m∧4) = √112

∴ m² = √112

Hence, 7x + 7 = √112

(7x + 7)² = 112

49x² + 14x + 49 = 112

49x² + 14x - 63 = 0

7x² + 2x - 9 = 0

7x² + 9x - 7x - 9 = 0

x(7x + 9) - 1(7x + 9) = 0

(x - 1)(7x + 9) = 0

x - 1 = 0

∴ x = 1

When x = 1

m²= 7 + 7 = 14

m³= 4y and m∧4 = 112

Also m∧4/m²= m² = 112/14 = 8

Hence, m° = 2; m = 2 X 2 = 4; m² = 2 x 2 x 2 = 8; m³= 2 x 2 x2 x 2 = 16

m³ = 16 = 4y

∴ y = 16/4 = 4

AleksandrR [38]3 years ago

4 0

Answer:

x 1 y 4

Step-by-step explanation:

lol

You might be interested in

Which measurement is most accurate to describe the width of a penny 19 mm 8 cm 1 m or 0.3 km

gizmo_the_mogwai [7]

It's either 8 cm or 1 m....i personally think 8 cm is more accurate but, 1 m is still an acceptable answer

5 0

3 years ago

Read 2 more answers

Elizabeth continued to save for her car down payment.

Reil [10]

ummmm it could be third one i guesss

6 0

2 years ago

Read 2 more answers

A sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to

Archy [21]

Answer:

0.2916, 0.1488, 0.0319

Step-by-step explanation:

Given that a sign on the pumps at a gas station encourages customers to have their oil checked, and claims that one out of 10 cars needs to have oil added.

Since each trial is independent there is a constant probability for any random car to need oil is 0.10

Let X be the number of cars that need oil

A) Here X is BIN(4,0.1)

$P(X=1) = 4C1(0.1)(0.9)^3 \\= 0.2916$

B) Here X is Bin (8, 0.1)

$P(x=2) = 8C2 (0.1)^2 (0.9)^6\\\\=0.1488$

C) Here X is Bin (20,5)

$P(x=5) = 20C5 (0.1)^5 (0.9)^{15} \\=0.0319$

3 0

2 years ago

What is the product of 7/8×1/2

Gelneren [198K]

$\frac{7}{8} \times \frac{1}{2}$

$= \frac{7 \times 4}{8}$

$= \frac{28}{8}$

$= \frac{ \cancel{28}}{ \cancel{8}}$

$= \frac{14}{4}$

$= \frac{ \cancel{14}}{ \cancel{4}} = \frac{7}{2}$

<h2>The required answer is 7/2 </h2>

3 0

3 years ago

Divide £250 to ratio 3:6:1

fiasKO [112]

Answer --> 75 : 150 : 25

3/10 x 250 = 75
6/10 x 250 = 150
1/10 x 250 = 25

7 0

3 years ago

Read 2 more answers