How many solutions does y=x^2+5x-7 have

Answer:

B. 7 zebra fish, 8 neon tetras

Step by step explanation:

First let's do process of elimination.

X A) 8 x 2.20 = 17.6, 7 x 1.80 = 12.6, 17.6 + 12.6 = 30.2

✔ B) 7 x 2.20 = 15.4, 8 x 1.80 = 14.4, 15.4 + 14.4 = 29.8

X C) 6 x 2.20 = 13.2, 9 x 1.8 = 16.2, 13.2 + 16.2 = 29.4

X D) 9 x 2.20 = 19.8, 6 x 1.8 = 10.8, 10.8 + 19.8 = 30.6

Answer:

x < 11

Step-by-step explanation:

35 > -5(4 - x)

35 > -20 + 5x

55 > 5x

x < 11

Topic: Inequalities

If you like to venture further, feel free to check out my insta (learntionary). It would be best if you could give it a follow. I'll be constantly posting math tips and notes! Thanks!

Answer:

Let

[tex]\qquad\quad {:}\longmapsto\sf The\: breadth =x\: ft[/tex]

[tex]\qquad\quad {:}\longmapsto\sf The\:length=x+1ft[/tex]

[tex]\qquad\quad {:}\longmapsto\sf Area=210ft^2 [/tex]

[tex]{\boxed {\sf Area=length\times Breadth}}[/tex]

[tex]\qquad\quad {:}\longmapsto\sf x (x+1)=210 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x^2+x=210 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x^2+x-210=0 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x^2+15x-14x-210=0 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x (x+15)-14 (x+15)=0 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf (x+15)(x-14)=0 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x+15=0\:or\:x-14=0 [/tex]

[tex]\qquad\quad {:}\longmapsto\sf x=-15\:or\:x=14 [/tex]

Hence correct value

[tex]\qquad\quad {:}\longmapsto\sf x=14[/tex]

[tex]\qquad\quad {:}\longmapsto\sf Breadth =x=14ft[/tex]

[tex]\qquad\quad {:}\longmapsto\sf Length=x+1=14+1=15ft [/tex]

Answer:

y = 1/3 x + 2

Step-by-step explanation:

We see points (-3, 1) and (3, 3).

We also see point (0, 2), the y-intercept.

To go from (-3, 1) to (3, 3), go up 2 and right 6.

slope = m = rise/run = 2/6 = 1/3

y = mx + b

y = 1/3 x + 2

its an obtuse angle so each equation should equal 180

Hint: (9y+7) = 180 and (2y+98) = 180

hope this helps pls mark me brainliest

Answer:

14 hours

Step-by-step explanation:

93 / 6 = 15.5 so every hour you drive 15.5 miles

217 / 15.5 = 14 you travel 14 miles overall

Answer:

False

Step-by-step explanation:

Answer:

The intial fee is $5

The equation to represent this is: y=12x+5

12 is the cost per hour    x=hours  y=total cost  

Step-by-step explanation:

77-41=36

36/3=12

12*6=72

77-72=5

Answer:

X = 144

Step-by-Step Explanation

Answer:

8n-10=30 n=5

8n-10=30 n=5

Answer:

8n-10=30

n=5

8(5)-10

40-10=30

n=5

Step-by-step explanation:

1/2 × (p+9) is the algebraic expression.

Answer:

√400 x √100 = 40,000  

√40,000 = 200  

So your answer is 200 x 10.

Hope this Helps!!

Step-by-step explanation:

The value of the simplified form is,

⇒ 20 x¹⁰

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

The expression is,

√ 400 x¹⁰⁰

Now, We can simplify as;

⇒ √ 400 x¹⁰⁰

⇒ 20 x¹⁰

Thus, The value of the simplified form is,

⇒ 20 x¹⁰

Learn more about the mathematical expression visit:

brainly.com/question/1859113

#SPJ5

Answer:

-2

Step-by-step explanation:

7-9=-2 hope this helps

Answer:

He started with $190

Answer:

190

Step-by-step explanation:

because $70 + $120 gives us $190 of how we got the answer is before he spending the 70$ he had $190.

Answer:

46/5 hope it helps!

Step-by-step explanation:

9x5= 45

45+1= 46

46/5

Answer:

m∠X= 22°

Step-by-step explanation:

In ΔVWX:

m∠V=(7x−1) ∘

m∠W=(4x+16) ∘ ,

m∠X=(3x−17) ∘ . Find M∠X.

Step 1

We find the variable x

The sum of angles in a triangle is 180°

Hence,

ΔVWX = m∠V + m∠W +m∠X

180° = (7x - 1)° + (4x + 16)° + (3x - 17)°

180° = 7x - 1 + 4x + 16 + 3x - 17

180° = 7x + 4x + 3x - 1 + 16 - 17

180° = 14x -2

Collect like terms

180° + 2 = 14x

182° = 14x

x = 182°/14

x = 13°

Step 2

We find m∠X

m∠X = (3x−17) ∘

x = 13

m∠X = (3 × 13 − 17)°

m∠X = (39 − 17)°

m∠X = 22°

Answer:

54

Step-by-step explanation:

You can use the short cut 0.6 * 90 ( * is another symbol for the multiplication symbol) this works differently for different numbers. If your percent is one digit, like 3%, you want to change it into the decimal 0.03. The reason why you multiply them together is because “of” is another word for multiply in math terminology.

Answer:

acute angle

Step-by-step explanation:

acute = angles that are less than 90⁰

The triangles which have three angles that measure less than 90° are:

acute triangle, equilateral triangle

"An acute triangle is a triangle with three acute angles that means each angle measures less than 90°."

"An equilateral triangle is a triangle where all sides and angles are equal. Each angle of an equilateral triangle measures 60°. "

"A right triangle is a triangle where one of the angle measures 90°. "

"A triangle that has two sides of equal length is called as an isosceles triangle. Also, two angles that are opposite to equal sides are always equal and measures less than 90°. "

For given question,

As one of the angle of right triangle measures 90°, it is not a required triangle.

Also, for isosceles triangle, although two equal angles measure less than 90°, the third angle can be 90°. So, an isosceles triangle is not a required triangle.

Therefore, the triangles that have three angles that measure less than 90° are:

1) acute triangle

2) equilateral triangle

Learn more about triangles here:

https://brainly.com/question/1311149

#SPJ2

Answer:

25

Step-by-step explanation:

Answer:

25

Step-by-step explanation:

not a 100% sure just trying to help

Answer:

64.3 Per hour

Step-by-step explanation:

If you divide 321.5 miles by 5 you get 64.3 per hour and to check you could times 64.3 by 5 to get 321.5

321.5 / 5 = 64.3

64.3 x 5 = 321.5

Answer:

2.09 is the answer now what

Answer:

4.88

Step-by-step explanation:

Answer:

The person above me is right, they deserve brainliest.

It is 4.88

ED2021

Answer:

Step-by-step explanation:

Things to remember,

1). Any point on the graph of a function is represented by [x, f(x)].

2). x-coordinates are the input values on x-axis and f(x) is the output value of the function on y-axis.

A). For x = 2, value of f(2) will be,

    f(2) = 4

B). For x = 5, value of f(5) will be,

    f(5) = 7

C). Since, 4 < 7

   Therefore, f(2) is less than f(5).

Answer: 33 groups

Step-by-step explanation:

Number of people that signed for help = 130 people

Number of people that can join a group = 4.

Number of groups that will be formed will be:

= Number of people that signed for help / Number of people that can join a group

= 130/4

= 32.5

= 33 groups

Since there'll be a remainder of 2 people, they will form a new group making 33 groups.

Answer:

Step-by-step explanation:

2 1/2* -4 3/5=

5/2*-23/5

-23/2 or -11 1/2

Answer:

No

I hate pokemon.

Answer:

The answer is: 9x^2 - 12x + 4

Step-by-step explanation:

Perfect square formula: (a - b)^2 = a^2 - 2ab + b^2 ; a = 3x, b = 2

(3x)^2 - 2 * 3x * 2 + 2^2

Simplify:

9x^2 - 12x + 4

The expanded and simplified form of (3x-2)^2 is 9x^2 - 12x + 4.

To expand and simplify (3x-2)^2, we can use the FOIL method. FOIL stands for First, Outer, Inner, Last and is a systematic way to multiply two binomials.

First, let's square the first term:

(3x)² = 9x²

Next, we multiply the outer terms:

(3x)(-2) = -6x

Then, we multiply the inner terms:

(-2)(3x) = -6x

Finally, we square the last term:

(-2)² = 4

Now, let's combine all the terms:

9x² - 6x - 6x + 4

Combining like terms, we have:

9x² - 12x + 4

So, the expanded and simplified form of (3x-2)² is 9x² - 12x + 4.

To know more about the whole square follow

https://brainly.com/question/30379752

#SPJ6

Answer:

Ranger's simplified expression was 0.1x + 18.2

The correct answer is the first option.

Step-by-step explanation:

To simplify the given expression

3(2.7x + 5) – 2(4x – 1.6)

First, we will open the brackets by distributing 3 and 2, that is

(3×2.7x) + (3×5) -(2×4x) -(2×-1.6)

Now, we will get

8.1x + 15 - 8x +3.2

Now, collect like terms,

8.1x - 8x + 15 + 3.2

Then, we will get

0.1x + 18.2.

Hence, Ranger's simplified expression was 0.1x + 18.2.

The correct answer is the first option.

Answer:

It's A

Step-by-step explanation:

Answer:

just substitute the X's

Answer:

3 2/5 divided by 3 1/6 = 106/95 = 1 11/95

Step-by-step explanation:

3 2/5 divided by 3 1/6 =

17/5 divided by 19/6 =

17/5 x 6/19 =

106/95 =

1 11/95