Use an inverse matrix to solve the system of equations, if possible.
2x + 3y = 2
x – 4y = -21

Answer:

Im looking for this answer to lol

Step-by-step explanation:

Answer:brainless plz

Step-by-step explanation:

(a) Sketch the graph with equation y = f(x), showing the coordinates of the points where the ... Given that f(x) = e ... (b) Write down the range of f. ... Right-hand branch in quadrants 4 and 1.

Answer:

$2060

Step-by-step explanation:

3% of 2000 = 60

2000+ 60 =2060

Answer:2300

Step-by-step explanation:

Answer:

Step-by-step explanation:

-11= p-9

P= 11-9

P=2

Answer:

75

Step-by-step explanation:

if there were 5 boys to 6 girls then multiply the 6 by 15 to get 90 then multiply the 5 by 15 as well and you get 75 to 90.

Answer:

108

Step-by-step explanation:

first divide 5 into 90 wich equals 18

then add to 90 which equals 108

Answer:

formula

v=u+1

expression

3x'2-2x+1

Answer:

she bought 6 pounds of coffee

Step-by-step explanation:

80 minus 33.08=46.92

46.92÷7.82=6

so the answer is 6

Answer: b

Step-by-step explanation:

Answer:

A. The open circle pointing to the right

Step-by-step explanation:

Answer:

Real Zeros    x = ±4

Complex zeros :  x = ±3 i

Step-by-step explanation:

Explanation

f(x) = x⁴ + 5x² – 36

f(x) = x⁴ + 5x² – 36

    = (x²)² + 9 x² - 4 x² - 36

   = x² (x² + 9) - 4( x² +9)

   = (x² -4 ) (x² +9)

f(x) = x⁴ + 5x² – 36 = (x² -4 ) (x² +9)

(x² -4 ) (x² +9) = 0

⇒ x² -4  = 0 and x² +9 =0

⇒ x² -2² = 0  and  x² = -9

⇒ x = ±4   and   x = ±3 i

Real Zeros    x = ±4

Complex zeros :  x = ±3 i

Answer:

look at my graph

Step-by-step explanation:

solve for y for the second one by subtracting 2 by boths sides --> y > x -2

Answer:

68ft

Step-by-step explanation:

Sin36=o/h = opposite / hypotenuse

x=40/Sin36

x=68

The kite in the air is 23.512 feet.

Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles.

Given:

String length= 40 feet

Angle of elevation = 36

Now using concept of application of Trigonometry

sin 36= P/H

0.5878= P/40

P= 23.512 feet.

Hence, the kite in the air is 23.512 feet.

Learn more about Trigonometry here:

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Answer:

The average occupancy rate for the past three nights is of 86.49%.

Step-by-step explanation:

We want to find the average occupancy rate, as a percentage.

You've sold 101 rooms, 98 rooms, and 102 rooms over the past 3 days.

So the mean number of rooms sold during the past 3 days is given by:

[tex]A = \frac{101 + 98 + 102}{3} = \frac{301}{3} = 100.33[/tex]

Average rate:

[tex]R = \frac{100.33*100}{116} = 86.49[/tex]

The average occupancy rate for the past three nights is of 86.49%.

Answer:

1. principal × rate× time. 250×.03×1

2. $7.50

3. $30.00

Answer:

Step-by-step explanation:

lets say "a" for the empty line,

for small triangle; y^2 = 2^2 + x^2

right triangle; we say a for empty line, a^2= 6^2 + x^2

and big triangle covering both triangles, 8^2 = y^2 + a^2

lets add left sides and right sides in each;

x^2 + 4 + x^2 + 36 + y^2 + a^2 = y^2 + a^2 + 64 and we can delete same things for both sides

y^2 and a^2 can be deleted and 4+36 - 64

2(x^2)=24

x^2= 12

and x will be √12

so, y^2 = x^2 + 2^2 which means y^2 = 12+4 y=16

Answer:

3x=38

Step-by-step explanation:

Given that,

Annie and Emily are sisters. Emily’s age is 7 more than twice Annie's age, a. The sum of their ages is 45.

Let Annie's age is x.

Emily's age = 7+2x

ATQ,

The sum of their ages is 45.

x+7+2x = 45

Taking like terms together,

x+2x = 45-7

3x=38

Hence, this is the relation between their ages.

Answer:

30

Step-by-step explanation:

1/3 of 90 is 30.

Answer:

oi

Step-by-step explanation:

Answer:

m=-7/3 I think thats the right answer

Answer:

-40.12

Step-by-step explanation:

Answer:

B=3

Step-by-step explanation:

Use a graphing calculator and type in these toe equations

y=2x+13

y=3x+10

and the point they intersect will say (3,19) and the answer is 3

For 3 rounds of bingo, the costs will be the same for an adult and a child option second is correct.

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

We have:

A charity bingo game costs $2 per round and has a $13 entry fee for an adult. It costs $3 per round and a $10 entry fee for a child.

Let's suppose, for x rounds of bingo, the costs will be the same for an adult and a child.

For x rounds, cost for adult:

= 2x + 13

For x rounds, cost for child:

= 3x + 10

2x + 13 = 3x + 10

x = 3

Thus, for 3 rounds of bingo, the costs will be the same for an adult and a child option second is correct.

Learn more about the linear equation here:

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Answer:

1. 3%=3/10

2. 14%=7/50

3. 66%=33/50

4. 10%=1/10

5. 17%=17/100

6. 30%=3/10

7. 50%=1/2

Answer:

20.412

Step by step explanation:

8.1% of 252 = 0.081 × 252 = 20.412

Answer:

Hello your question is incomplete attached below is the missing part of the question

Regular Exercise           N                             Mean                          Std Dev

Yes                                35                             48.5                                12.5

No                                  120                           56.9                                11.9

answer : ( -12.968, -3.832 )

Step-by-step explanation:

To generate a 95% confidence interval

first step :

Assume population variance is equal we will calculate the number of degrees of freedom

df = n1 + n2 - 2 = 35 + 120 -2 = 153

second step:

Given : critical value = 0.05 , df = 153

hence Tc = 1.976

assuming the population variance is equal calculate pooled std as ( attached below )

Sp = 12.036

third step :

calculate the standard error

Se = [tex]Sp\sqrt{\frac{1}{n1} +\frac{1}{n2} }[/tex]

n1 = 35

n2 = 120

Sp = 12.036

hence Se = 2.312

final step

Compute the 95% confidence interval = ( -12.968, -3.832 )

attached below is the detailed solution

Answer:

What's the question?

Step-by-step explanation:

Your struggling with

Answer:

$76.70 is the answer.

Step-by-step explanation:

18% of 65.00 is 11.70. I added 11.70 to $65.00, and got 76.70.

Answer:

76.7

Step-by-step explanation:

65 + 18% tip= 65 times 0.18 = 11.7 65 +11.7 = 76.7

Hope this helped have a good day

Answer and explanation:

Depending on the type and size of tent you wish to make, an average tent should consume more than 12.5ft of fabric. You would require more than 10 yards of fabric to make a small tent that an adult human being can fit in.

1 yard = 3 ft

And so you would require about 30 ft of fabric to make your tent. Therefore the options listed may not be enough fabric to make a tent

Answer:

He did not multiply 2/3 by a fraction equal to 1.

Step-by-step explanation:

For example he could have multiplied 2/3 by 4/4

= 2*4/3*4 = 8/12,