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
RGRRGRGRGRGRG THIS IS ONLY FOR idunno9 GHRGRGRGRFERRGRGRGRGRGRGRGRR
Answer: thanks
Step-by-step explanation:
what is the simplified form of π √3- 8π √3?
A: -7√3π
B: -9√3π
C:-7π
D:-9π
Answer:
Sorry but it is None of them. Well, it is -7π√3.
Step-by-step explanation:
Answer:
π √3- 8π √3=-7π√3 is your answer
Geometry Help!
Please only answer if you know the answer. Look at the image below to answer the question.
Be sure to show all of your work and explain your thinking.
I posted 3 of these, so if you understand it, please go and check them out.
If you do not know the answer use the comment section, don't answer my question with a comment. Thanks, Good Luck!
Answer:
Step-by-step explanation:
Use the Law of Sines
FE/sin38=18/sin90
FE=18sin38=11.08
DF/sin52=18/sin90
DF=18sin52=14.2
Answer:
FE = 11.08, DF = 14.18Step-by-step explanation:
Use trigonometric ratios:
sin = opposite / hypotenusecos = adjacent / hypotenuseApply to the given triangle
Side FE
FE / DE = sin 38° (or cos 52°, the value is same)FE / 18 = sin 38°FE = 18 sin 38°FE = 11.08Side DE
DF / DE = sin 52° (or cos 38°, the value is same)DF / 18 = sin 52°DF = 18 sin 52°DF = 14.18Javier plays the saxophone. For 5 days each week, he practices for 1.5 hours. If he does this for 26 weeks, how many total hours will he practice?
Answer:
195 hours
Step-by-step explanation:
1.5 x 5 = 7.5
7.5 x 26 = 195
hope this helped don't know if you need a writen
Answer:44 i think
Step-by-step explanation:
26
1.5x=39+5=44
What does it mean when a problem asks for an expression
Answer:
when it asks for an expression it means an equation
ex.) 2x+3 =5
Step-by-step explanation:
what is the approximate square root to 115
what is the approximate square root to 115
10.7
Step-by-step explanation:
this is the ans
Solve the following variation
If y varies directly as x and y = 9 when x = 3, find y when x = 8.
Answer: y-9x+3
Step-by-step explanation:
In ABC, angle C is a right angle. Which statement must be true
Answer:
a
Step-by-step explanation:
a because the the sin is opposite divided by hypotenuse and the opposite of a is 12 and the hypotenuse is 13 so sin a would be 12/13
this is equals to the cosine of b because cos is adjacent/hypotenuse and the adjacent of b is 12 and the hypotenuse is 13 so cos b would be 12/13
hope this helps :)
How many 1/5's are in 20?
Answer:
4
Step-by-step explanation:
David rents DVDs from a company that charges a $7.00 monthly fee and $1.50 for each DVD rental. He ends up paying $20.50 for the month of June. The equation 1.5 x + 7 =
20.5 represents this situation. Solve this equation for x. Type in the NUMBER answer in the text box.
Do u have a screenshot
Step-by-step explanation:
Ms. Jones baked 25 cookies. 4 fifths of the cookies were oatmeal. How many oatmeal cookies did Ms. Jones bake?
Hi there!
20 outmeal cookies..
Convert fraction into number term:
[tex]\frac{4}{5}=\frac{20}{25}=20[/tex]
Therefore, there would be 20 oatmeal cookies.
Solve this system by substitution. y = 3 y = -3x + 6 *Remember to write your answer as a coordinate point (x, y). I
Answer:
(1, 3)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightEquality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of EqualityAlgebra I
Coordinates (x, y)Solving systems of equations using substitution/eliminationStep-by-step explanation:
Step 1: Define Systems
y = 3
y = -3x + 6
Step 2: Solve for x
Substitute in y: 3 = -3x + 6[Subtraction Property of Equality] Subtract 6 on both sides: -3 = -3x[Division Property of Equality] Divide -3 on both sides: 1 = xRewrite/Rearrange: x = 1Step 3: Solve for y
Define original equation: y = -3(1) + 6Multiply: y = -3 + 6Add: y = 3Can someone help me please!
Answer:
C
Step-by-step explanation:
B
because -8 is smaller than -9, i based it on yhe number line of integers
hoope it helps
b/4 +2 = -1 what is the value of b
Answer:b= -12
Step-by-step explanation:
b/4 + 2 = -1
First subtract 2
b/4 = -3
Then multiply by 4
b= -12
Which property is shown below?
(52 +68) + 38 = 52 + (68 + 38)
a. Associative Property
Ob. Commutative Property
Oc. Identity Property
Od. Distributive Property
Answer:
Ob
Step-by-step explanation:
took class
what is a direct proportion.
Answer:
a proportion of two variable quantities when the ratio of the two quantities is constant. Hope this helps!
Step-by-step explanation:
Answer:
a proportion of two variable quantities when the ratio of the two quantities is constant.
Step-by-step explanation:
I need help please!!!!!!
In order to make a safe parachute landing from a mountain top, you must be at least 9,000 feet in the air. At the top of Mount Montgomery, the angle of depression is 19 degrees looking diagonally down at a landing zone that is 16000 feet away from the middle of the mountain. Determine if it is safe to use a parachute from the top of this mountain.
Answer:
Send me a picture I can help u
Answer:
Step-by-step explanation:
tan19=h/16000
h=16000tan19
h=5509.24ft
So it is less than 9000ft and is unsafe to use the parachute.
You are going to Wal-Mart to buy DVD's. The DVD'sare packaged in a box. There are thirty five DVDs in the box. You only want five. The box cost forty-five dollars. How much did you pay? How much change do you get back if you pay with fifty dollars? Explain the order of operations that was used.
Answer:
574.94
Step-by-step explanation:
walmart
Which statement is true about comparing 5.37 and 5.4?
5.4 is greater because 43
5.37 is greater because 7>4.
5.4 is greater because it has fewer digits.
5.37 is greater because it has more digits.
Derrick brought 24 cupcakes to a birthday party. The guests at the party ate 2/3 of the cupcakes. How many cupcakes did the guests eat?
how many solutions does -3x + 3y =4 -x + y =3 have?
-3x + 3y =4
-x + y =3
0
1
2
infinite
Answer:
0
Step-by-step explanation:
-3x + 3y = 4
-x + y = 3
3y = 3x + 4
y = x +4/3
-x + (x+4/3) = 3
4/3 = 3
This is an equality there for no solution.
I WILL GIVE BRAINLIEST PLS PLS PLS PLS HELP I ONLY HAVE 1 DAY
Answer:
Mean: 20
Median: 20
Mode: 5, and 20
Range: 30
Step-by-step explanation:
Mean: Add all the numbers up then divide by the total of numbers there are. 5+30+35+20+5+25+20=140 divided by 7
Median: middle number, list all the numbers from greatest to least and whatever number is in the middle is your answer (5, 5, 20, 20, 25, 30, 35)
Mode: Number that is repeated the most. 5, and 20
Range: The distance from the highest number to the lowest 35-5= 30
Brainliest?
A line's y -intercept is 10,and its slope is 9 . What is its equation in slope-intercept form?
Answer:
y = 9x + 10
Step-by-step explanation:
y = mx + b
Here, m is slope and b is y-intercept
y = 9x + 10
Can someone pls help me with my ela assignments I’ll pay u 20$ if it’s right cashapp or PayPal
Christiane runs for 2.5 kilometers every day. After 7 days, how many meters has Christiane
Answer:
NEYO
Step-by-step explanation:
Answer:
17500 meters
Step-by-step explanation:
2.5 x 7
(Kilometers x 7 days)
17.5 x 1000
((2.5 x 7) x converting kilometers into meters)
17500
.
38% of the animals are dogs.
40% of the animals are spotted.
12% of the animals are spotted dogs.
What percent of the animals in the store are spotted or dogs?
Answer:
66%
Step-by-step explanation:
what Is the answer to 1/6 + 2/3
Answer:
5/6
Step-by-step explanation:
When adding fractions, you must ensure the denominator is the same in both fractions.
In this case, the 3 can be multiplied by 2 to equal 6, the other denominator.
When multiplying fractions to create a common denominator, you must multiply the both the numerator and the denominator by the same value, to ensure that the fraction is still equivalent.
2/3 × 2/2 = (2×2)/(3×2) = 4/6
Replace 2/3 with its equivalent 4/6.
Now you will add the numerators together.
1/6 + 4/6 = (1+4)/6 = 5/6
Your final answer is 5/6
Answer:
5/6
Step-by-step explanation:
2/3--> 4/6 (GCF)
4/6+1/6=5/6
:)
A number went into this machine and 36 came out.
Answer:
75
Step-by-step explanation: