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3 years ago

7

7 - (-11) = _ Please help having trouble with answer

1 answer:

stepladder [879]3 years ago

8 0

Use long addition to evaluate: the answer is 18

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Write a number that has a zero in the tens place draw a quick picture for your number

andrew-mc [135]

20...just draw 20 coins or something

6 0

3 years ago

HELP ASAP PLEASE!!!

PilotLPTM [1.2K]

Answer:

A

Step-by-step explanation:

The range is the y values of the function from the least to the greatest. To find it find the furthest point up and down. Draw a horizontal line from the point to the y-axis to identify the y value. Here the function extends from -3 to 6. So the range is $-3\leq y\leq 6$ .

6 0

3 years ago

For which positive integer values of $k$ does $kx^2+20x+k=0$ have rational solutions? Express your answers separated by commas a

Musya8 [376]

Answer:

-10,10

Step-by-step explanation:

The given quadratic equation is

$k {x}^{2} + 20x + k = 0$

The discriminant of this equation is given by;

$D = {b}^{2} - 4ac$

where a=k, b=20, c=k

For rational solutions, the discriminant must be zero.

${20}^{2} - 4 \times k \times k = 0$

Simplify to get:

$400 - 4 {k}^{2} = 0$

This implies that:

$400 = 4 {k}^{2}$

$100 = {k}^{2}$

Take square root to get:

$k = \pm\sqrt{100}$

$k = \pm10$

$k = - 10 \: or \: k = 10$

3 0

2 years ago

Ln(x+7)=3<br> This is part of a webquest any help would be nice.

Assoli18 [71]

ln(x−7)==4/3

To solve for x, rewrite the equation using properties of logarithms.

e^ln(x−7) =e^4/3

Solve for x

x=e^4/3 + 7

The result can be shown in multiple forms.

Exact Form:

x= e^4/3+7

Decimal Form:

x=10.79366789

5 0

2 years ago

Read 2 more answers

a large office desk has an area of 42ft^2. if the width is 3.5 feet , write an equation to represent this area

Monica [59]

3.5x=42

x represents the length, since the formula to find area of a rectangle is width times length.

8 0

2 years ago

Read 2 more answers