9. Rob usa el cálculo mental para resolver 90 – 30.
Dice que 9 decenas menos 3 decenas son
6 decenas, o 60. ¿Esto es verdadero o falso?
Encierra tu respuesta en un círculo.

Verdadero

o

Falso

Answers

Answer 1
Versadero. Espanōl eeee

Related Questions

Larry made 2.5 liters of orange juice and drank 750 milliliters of it. How much orange juice is left?

Answers

Answer:

1.75 liters is left

Step-by-step explanation:

1ml is 1000ml

Answer:

1,750 milliliters left.

Step-by-step explanation:

2.5 liters equal 2,500 milliliters. So u do 2,500 - 750 which gives you 1,750

How many people survived the water park?

Answers

70 people were surveyed

Answer:

70 people visited the waterpark.

Step-by-step explanation:

Since you know that 250 people were surveyed and of those people, 28% of them visited the waterpark, you have to find out what 28% of 250 is. 28% of 250 is 70, so 70 people visited the waterpark.

I hope this helps you.

“Half of a number (n) is at least 22."
translate and solve

Answers

Answer:

n >_44

Step-by-step explanation:

1/2n>_22

(times 2 on both sides)

n >_44

*** >_ is greater than or equal to sign

Goran is participating in a 6-day cross-country biking challenge. He biked for 51, 65, 62, 46, and 62 miles on the first five
days. How many miles does he need to bike on the last day so that his average (mean) is 56 miles per day?

Answers

Answer:

i dont understand?

Step-by-step explanation:

the equation A=6s to the power of 2 can be used to calculate A the surface area of the cube with edges lengths using this equation what is the surface area of a cube with an edge length of 5 inches?

Answers

Answer:

150 in^2

Step-by-step explanation:

The surface area, in general, is A = 6s^2, where s is the length of one side of the cube.

If the edge length is 5 in, then the surface area of the cube is

A = 6(5 in)^2 = 6(25 in^2) = 150 in^2

6.1 - 5.4 - ( 7.7)

help

Answers

Answer:

-7

Step-by-step explanation:

i used a calculator

-7
You know I just used a calculator

Help it’s 50% of my grade

Answers

Answer:

(1/2)x+(1/4)=x

x=0.5

3x+3=2(x+7)

x=11

2(x-5)+7=x+8

x=11

0.8x+5=0.2(40-x)

x=3

5(x-1)-6x=-11x

x=0.5

6(x+2)-x=4(x+4)+7

x=11

(1/2)(x+8)+(3/2)x=10

x=3

Step-by-step explanation:

(1/2)x+(1/4)=x

x-0.5x=0.25

0.5x=0.25

x=0.5

3x+3=2(x+7)

3x+3=2x+14

3x-2x=14-3

x=11

2(x-5)+7=x+8

2x-10+7=x+8

2x-x=8+10-7

x=11

0.8x+5=0.2(40-x)

0.8x+5=8-0.2x

0.8x+0.2x=8-5

x=3

5(x-1)-6x=-11x

5x-5-6x=-11x

11x-x=5

10x=5

x=0.5

6(x+2)-x=4(x+4)+7

6x+12-x=4x+16+7

6x-4x-x=16+7-12

x=11

(1/2)(x+8)+(3/2)x=10

0.5x+4+1.5x=10

2x=6

x=3

write in exponential notation (-3)^6/ (-3)

Answers

Answer:

-3⁵

Step-by-step explanation:

3⁶ / -3 = -3⁶ * -3⁻¹ = -3⁶⁻¹ = -3⁵

Answer:

(-3)⁶/(-3) = {(-3)×(-3)×(-3)×(-3)×(-3)×(-3)}/(-3) = (-3)⁵

-3⁵ is the right answer.

what is the square of x^2+4x-5=0

Answers

Answer:

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Step-by-step explanation:

(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥(っ◔◡◔)っ ♥ hi ♥


If DEFG is a rectangle,
find the measure of DEG.
how do i do this

Answers

Answer:

It is 68

Step-by-step explanation:

[tex]2x - 10 = x + 6 \\ 2x - x = 6 + 10 \\ x = 16[/tex]

[tex]let \: (y) \: the \: angle \: which \: wanted \\ 90 = y + (2x - 10) \\ 90 = y + (32 - 10) \\ y = 90 - 22 \\ y = 68[/tex]

Thanks alot

Which of the following is an advantage to refinancing?
A. It is a time-consuming process.
B. There are prepayment penalties.
C. It offers lower interest rates.
D. There are additional closing costs.

Answers

Answer:

c it offers lower interest rates

7
A tablet computer listed at an original price of $250 is placed on sale for
20% off the original price. Bob, an employee of the store, gets an
additional 30% off the sale price. What price would Bob pay to purchase
the tablet computer?
$100
$125
$200
$140

Answers

Answer:

$140

Step-by-step explanation:

250 decrease 20% =

250 × (1 - 20%) = 250 × (1 - 0.2) = 200

200 decrease 30% =

200 × (1 - 30%) = 200 × (1 - 0.3) = 140

The answer is D

Explanation.

20.
Which of the following is equivalent to
the expression (i + 5)(3 + 4i)?
F 11 + 23i
G 15 + 19i
H 19 + 23i
J 23i

Answers

Answer:

11+23i

simplified using Foil

How do I use the definite integral to find the area between x-axis and f(x) over the indicated interval

Answers

Answer:

(A). 2

Step-by-step explanation:

FYI :

[tex]\int\limits^4_1 {x^{-\frac{1}{2} } } \, dx[/tex] = 2√x (from 1 to 4) = 2√4 - 2√1 = 2

A triangle has a perimeter of 280 cm, and its side lengths are a, b and c respectively. If
a:b= 2:3, b:c=4:5, find the length of each side of the triangle.​

Answers

Answer:

The length of the sides are 64 cm, 96 cm and 120 cm.

Step-by-step explanation:

Perimeter of a triangle:

The perimeter of a triangle is the sum of it's sides.

A triangle has a perimeter of 280 cm, and its side lengths are a, b and c respectively.

This means that:

[tex]a + b + c = 280[/tex]

a:b= 2:3

This means that:

[tex]\frac{a}{b} = \frac{2}{3}[/tex]

[tex]2b = 3a[/tex]

[tex]b = \frac{3a}{2}[/tex]

b:c=4:5

This means that:

[tex]\frac{b}{c} = \frac{4}{5}[/tex]

[tex]4c = 5b[/tex]

[tex]c = \frac{5b}{4}[/tex]

[tex]c = \frac{5*3*a}{4*2} = \frac{15a}{8}[/tex]

At the original equation:

We replace b and c in function of a. So

[tex]a + b + c = 280[/tex]

[tex]a + \frac{3a}{2} + \frac{15a}{8} = 280[/tex]

Multiplying everything by 8

[tex]8a + 12a + 15a = 280*8[/tex]

[tex]35a = 280*8[/tex]

[tex]a = \frac{280*8}{35}[/tex]

[tex]a = 64[/tex]

Sides b and c:

Since we have a, we can find sides b and c:

[tex]b = \frac{3a}{2} = \frac{3*64}{2} = 3*32 = 96[/tex]

[tex]c = \frac{15a}{8} = \frac{15*64}{8} = 15*8 = 120[/tex]

The length of the sides are 64 cm, 96 cm and 120 cm.

Find the 11th term of the geometric sequence 2, -6, 18, ...

Answers

r = a₂/a₁ = -3
a₁₁ = a₁r¹⁰ = 2×(-3)¹⁰ = 118,098

Write an equation for line L in mpoint-slope form and slope-intercept form.
L is perpendicular to y = 5x.

Answers

Answer:

X and A half marks Nathan and na ha na na he and na na he Meena new q me new me know if you

Step-by-step explanation:

erert4 Ka a manual Mrs Ann messed hall hall USS jam

Translate into an equation.
The sum of eight and a number, x, is four.

Answers

Answer:

4=8+x

Step-by-step explanation:

Use the remainder theorem to find P(-3) for P(x) = 2x° +5x² +5.
Specifically, give the quotient and the remainder for the associated division and the value of P(-3).

Answers

2x(-3)+5x(3x3)+5= 46

what is 656 ÷ 4
we need to know how to solve this equation.​

Answers

Answer: 164

Step-by-step explanation:  656 /4

164

PLEASE ANSWER I WILL GIVE BRAINLIEST AND LOVE U FOREVER!

Answers

Answer:

im not even sure this is right

Step-by-step explanation:

A=a+b 2h=2+1.1

2·3.4=5.27

The polygons are similar. Find the value of x.
A
14
F 7 R
12
13
S
F
13
G
8
26
X =

Answers

Answer:

If the two polygons are similar, then their sides are proportianal.

We see that sides in the larger polygon are two times as long as the sides of the smaller polygon.

So, if the larger polygon has a side length of 13, then the smaller polygon would have a side length of 13/2, or 6.5

Let me know if this helps!

Sidney wants to increase the amount of
time he spends studying.

Answers

thats reallly good for sidney

Answer:

if this is ur question, then ur answer is 53

The new Samsung 9 phone costs $500, and has a sales tax of 15%. What is the final price?

Answers

Answer:

575

Step-by-step explanation:

500 x .15 = 75

500 + 75 =575

Helpppppp plssss



Consider the numbers z= 2 + 5i, w = -3- 2i, and u=-1+2i.
z+w is equal to -1+vi
w-u is equal to - 4i
u + w is equal to -4 -

Answers

Answer:

Step-by-step explanation: 4i = i4 so divide that into one half and you get 4r

Answer:

3, 2, 0

Step-by-step explanation:

just trust me

What is the word form for 407,219

Answers

Answer:

four hundred seven thousand two hundred nineteen

Step-by-step explanation:

Answer:

Four hundred seven thousand two hundred nineteen

Step-by-step explanation:


20. Juwan makes 12 baskets in 40 minutes. If he continues making baskets at this rate, how
many baskets will he make in 90 minutes? REMEMBER TO INCLUDE THE UNIT OF
MEASURE (BASKETS) WITH YOUR ANSWER.

Answers

at30 cestas é a respos

Why is a data point with an​ x-coordinate of 0 a good point to use when creating a trend line for a data​ set? The graph shows the altitude of a weather balloon over time. The trend line passes through the points ​(0​,481​) and ​(10,39,​). Write the equation of a trend line for the data shown in the graph. After how many minutes is the balloon at an altitude of 454.6 feet above sea​ level?

Answers

It takes the balloon 0.6 minutes to reach an altitude of 454.6 feet above sea​ level

A linear equation is given by:

y =mx + b

where y, x are variables, m is the slope of the line and b is the y intercept.

Let y represent the altitude of the balloon at time x.

Given that a trend line passes through the point ​(0​,481​) and ​(10,39), the equation of the trend line is:

[tex]y-y_1=\frac{y_2-y_1}{x_2-x_1} (x-x_1)\\\\y-481=\frac{39-481}{10-0}(x-0)\\\\y=-44.2x+481[/tex]

At 454.6 ft:

454.6 = -44.2x + 481

-26.4 = -44.2

t = 0.6 minutes

It takes the balloon 0.6 minutes to reach an altitude of 454.6 feet above sea​ level

Find out more at: https://brainly.com/question/13911928

Solve this system by substitution. y = 5x - 15 y = 2x - 6 *Remember to write your answer as a coordinate point (x,y Solve this system by substitution​

Answers

5x - 15 = 2x - 6
3x = 9
x = 3
Y = 5(3) - 15
Y = 0
(3,0)

Use the ruler provided to measure the radius of the circle to the nearest centimeter.
Which measurement is closest to the area of the circle in square centimeters?

Answers

Answer

its B

Step-by-step explanation:

Answer:

43.96 2 cm2

Step-by-step explanation:

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