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3 years ago

Some one please help me on my exam

Mathematics

2 answers:

Elena L [17]3 years ago

5 0

Answer:

Where is the data ?

Step-by-step explanation:

Mazyrski [523]3 years ago

5 0

Answer:

Normal

Step-by-step explanation:

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A positive real number is 2 less than another. When 4 times the larger is added to the square of the smaller, the result is 49.

Kobotan [32]

Answer:

The numbers are

$-2+3\sqrt{5}$ and $3\sqrt{5}$

Step-by-step explanation:

Let

x -----> the smaller positive real number

y -----> the larger positive real number

we know that

A positive real number is 2 less than another

$x=y-2$

$y=x+2$ ----> equation A

When 4 times the larger is added to the square of the smaller, the result is 49

$4y+x^2=49$ ----> equation B

substitute equation A in equation B

$4(x+2)+x^2=49$

solve for x

$x^2+4x-41=0$

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b\pm\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+4x-41=0$

$a=1\\b=4\\c=-41$

substitute in the formula

$x=\frac{-4\pm\sqrt{4^{2}-4(1)(-41)}} {2(1)}$

$x=\frac{-4\pm\sqrt{180}} {2}$

$x=\frac{-4\pm6\sqrt{5}} {2}$

$x=-2\pm3\sqrt{5}$

The positive real number is

$x=-2+3\sqrt{5}$

Find the value of y

$y=x+2$

$y=-2+3\sqrt{5}+2$

$y=3\sqrt{5}$

6 0

3 years ago

Max has a Starbucks' gift card for $50. HIs favorite drink is the S'mores Frappuccino. Each drink costs $4.25. How many frappucc

hram777 [196]

Answer:

4.25x ≤ 50

Number of drink = 11

Step-by-step explanation:

Given:

Amount of gift card = $50

Each drink cost = $4.25

Find:

Number of drink

Computation:

Assume;

Number of drink = x

So,

4.25x ≤ 50

x ≤ 11.76

so,

Number of drink = 11

5 0

2 years ago

The quotient of 45 and r

AysviL [449]

Answer: 45r

Step-by-step explanation:

6 0

3 years ago

Ayudaaa plis 7-4= 6-2= -3-2= -8+9= -9+5= 1+10=

vladimir2022 [97]

Answer:

7-4=3

6-2=4

-3-2= -5

-8+9=1

-9+5= -4

1+10=11

Step-by-step explanation:

No es tan difícil, puedes g0oglearlo

6 0

2 years ago

Read 2 more answers

Evaluate 1/4c+3d when c=6 and d=7

labwork [276]

$\dfrac{1}{4}c+3d$

Put the values of c = 6 and d = 7 to the expression:

$\dfrac{1}{4}\cdot6+3\cdot7=\dfrac{1}{2}\cdot3+21=1.5+21=22.5$

5 0

3 years ago