Step-by-step explanation:
quisiera ayudarte pero no hablo inglés :(
How many grams is 3.3 mole of Mg(OH)2 ?
Answer: m = 3.3 mol·58.326 mol = 192 g
Step-by-step explanation: molar mass of substance is
M= (24.31+ 2·1.008 + 2·16) g/mol = 58.326 g/ mol.
Amount of substance n = m/M and mass m = n·M
Two lines intersect as shown.
(2x+20) •
609
Which is the value of x ?
Answer:
[tex]2x + 20 = 60 \\ 2x = 60 - 20 \\ 2x = 40 \\ x = \frac{40}{2} \\ x = 20[/tex]
How many times larger is 3.6 x 106 than 7.2 x 105?
Can someone tell me why is nobody helping me in this app come on y’all help
Answer:
x = 3/2
Step-by-step explanation:
7/3 = (x + 2)/x
7x = 3(x + 2)
7x = 3x + 6
4x = 6
x = 6/4 = 3/2
There, someone helped you. Now could you do it alone next time?
please help asap!!
have a good day
Answer:
60
Step-by-step explanation:
Because there are 4 different trim levels, 5 different colors, and 3 different interiors, you have to multiply 4 x 5 x 3.
4 x 5 x 3= 60
Based only on the information given in the diagram, which congruence
theorems or postulates could be given as reasons why ADEF= AKLM?
Check all that apply.
AA
O A. LA
ОВ. НА
O C. AAS
D. SAS
E HL
F.LL
=================================================
Explanation:
LA stands for Leg Angle. More specifically, the angle is an acute angle. This theorem only works for right triangles. We see that ED = LK which is one pair of congruent leg segments. So that takes care of the L part of LA. However, we don't know anything about the acute angles. We don't know if angle E = angle L, or if angle F = angle M, or something along those lines. We need angle markers to tell us or not.
In short, we only have half the info needed for LA, so we must cross choice A off the list.
----------------
HA stands for hypotenuse angle, or hypotenuse acute angle, and this rule only applies for right triangles. We don't know anything about the hypotenuse lengths if they are the same or not.
Similar to choice A, we don't know anything about the acute angles either.
Those two facts mean we must cross off choice B.
----------------
AAS stands for Angle Angle Side. The order is important because the side is not between the angles. The diagram only shows one pair of angles that are congruent to one another. That pair being the 90 degree angles indicated with the square marker. We don't have another pair of angles, so we cannot use AAS.
Cross choice C off the list.
-----------------
We can use SAS because we have two pairs of congruent sides and one pair of congruent angles.
The congruent sides are
ED = LK (double tickmarks)DF = KM (single tickmarks)That takes care of the two "S"s of "SAS". The "A" would be those two right angles which are congruent to one another. The angles are between the congruent sides which is important. Recall that SSA is not a valid congruence theorem.
So that's why choice D is the only answer.
-----------------
Side note: We could use the LL theorem, where L stands for leg, since we are given two pairs of congruent legs for each triangle. Like LA and HA, this only applies to right triangles. LL is a special case of SAS. However, LL isn't listed so we'll just be sticking with SAS as the only answer.
(3RD TIME POSTING THIS!)
10.Solve the inequality
r + 0.2 < 0.7
Answer:
r can be any number so would it not be:
r + 0.2 ≤ 0.7
Step-by-step explanation:
This should not be too hard but I haven't done inequalities in a long time. So this might or not be the answer.
1. Rewrite the equation 5(x - 3) = x + 13 with 6 substituted for x. Write a
question mark over the equal sign to show that you're testing to see if the
equation is true
2. Simplify both sides. Show your work.
3. Is x = 6 a solution to the equation? Why or why not?
4. Find a value of x that is a solution to 5(x - 3) = x + 13. Describe how you
found the solution
Answer:
Step-by-step explanation:
5(6-3)=6+13 -simplify
30-15=6+13
15=19
x doesnt equal 6
5(x-3)=x+13
5x-15=x+13
4x=28
x=7
4x=28
4(7)=28
28=28
There are 1000 meters in a kilometer. How far is the distance between Earth and
Voyager 1 in kilometers? *
Solve the area of a trapezoid formula for the variable h: A = 1/2h(b1 + b2)
Note: In this formula, A = area, H = height, and b1 and b2 are the bases of the trapezoid.
The area of the trapezoid formula can be solved for the variable h as,
h = 2A / (b1 + b2)
Given the formula to find the area of the trapezoid.
A = 1/2 (b1 + b2) h
Here A is the area, h is the height and b1 and b2 are the bases of the trapezoid.
We have to get an equation for formula in h.
That is, we need to isolate h alone on one side and the other terms and variables on other side.
Multiplying whole equation with 2,
2A = (b1 + b2) h
Dividing whole by (b1 + b2),
h = 2A / (b1 + b2)
Hence the required equation is h = 2A / (b1 + b2).
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What is the measure of
с 78
ООО
88
96
H E L P I M S L O W ! ! !
Answer:
Reflection across the x-axis
Step-by-step explanation:
The points are the same, just opposite of one another. The image looks as if it is a reflection. Think of the x-axis like a puddle and the shape looking into it; try to picture the image seeing its reflection to help.
Answer:
Reflection across the x-axis.
Step-by-step explanation:
The triangles mirror each other with the x-axis acting like said mirror.
How many solutions does the equation 8x + 38 = -3(-6 - 4x) has?
Answer:
Step-by-step explanation:
8x + 38 = -3(-6 - 4x)
8x + 38 = -3(-4x - 6)
8x + 38 = -3 (-4x - 6)
8x + 38 = 12x + 18
8x +38 = 12x + 18
8x + 38 - 38 = 12x + 18 - 38
8x + 38 - 38 = 12x + 18 - 38
8x = 12x + 18 - 38
8x= 12x - 20
8x = 12x - 20
8x - 12x = 12x - 20 - 12x
8x - 12x = 12x - 20 - 12x
-4x = 12x - 20 -12x
-4x = 12x - 20 -12x
-4x = - 20
-4x = -20
[tex]\frac{-4x}{-4} =\frac{-20}{-4}[/tex]
X = 5
Ms. Good has a bag of 15 marbles. Three are blue, six are red, and six are yellow. What is the probability that she picks a yellow and then a red if she does NOT replace the marbles?
Question 7 options:
A. 6/35
B. 1/8
C. 16/25
D. 1/36
Answer:
the chances of her picking a yellow one is 6 in 35
Step-by-step explanation:
A = 1/2 (18 + 6) * 8
Answer:
a+ 96
Step-by-step explanation:
A= (1/2*18 + 1/2*6) *8
A= (9 + 3) * 8
A= 12 * 8
A= 96
Find the slope and the y-intercept of the line whose equation is -5x+3y-8=0
The slope is 5/3 and the h intercept is (0,8/3)
Which number completes the system of linear inequalities represented by the graph? y > 2x – 2 and x + 4y >
we have y≥2x-2 ------> inequality A
The inequality A is the solid red line in the graph the solution of the inequality A is the shaded area above the solid red line x+4y≥?------> inequality B The inequality B is the solid blue line in the graph the solution of the inequality B is the shaded area above the solid blue line we know that the point (0,-3) lie on the line of the inequality B. substitute the values of x and y in the equation of the line
x+4y=c
0+4*(-3)=c
c=-12
so the answer is -12
The system of linear inequalities is:
y > 2x – 2 and x + 4y > -12.
What is inequality?It shows a relationship between two numbers or two expressions.
There are commonly used four inequalities:
Less than = <
Greater than = >
Less than and equal = ≤
Greater than and equal = ≥
We have,
When x = 0, y = 2(0) – 2 = -2.
So the point (0, -2) is on the line.
When x = 2, y = 2(2) – 2 = 2.
So point (2, 2) is on the line.
Plotting these two points and drawing a line through them gives us the graph of y = 2x – 2.
Next, let's graph x + 4y = -12 by solving for y:
x + 4y = -12
4y = -x - 12
y = (-1/4)x - 3
Again, we can plot two points on the line.
When x = 0, y = -3, giving us the point (0, -3).
When x = -4, y = -2, giving us the point (-4, -2).
Plotting these points and drawing a line through them gives us the graph of x + 4y = -12.
Thus,
The solution to the system of inequalities is the shaded region where the two graphs intersect and y > 2x – 2.
This region is shown in the attached image.
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The time in minutes for each of Sam's phone calls this week are shown in the list. {9, 15, 5, 7, 9, 12, 11, 4} Which statement is true regarding the duration of his calls? A. The median is greater than 10. B. The mean is less than 8. C. The range is less than 10. D. The mode is greater than 7.
Answer: The mode is greater than 7.
Step-by-step explanation:
The time in minutes are given as 9, 15, 5, 7, 9, 12, 11, 4. We can arrange them in ascending order and this will be:
= 4, 5, 7, 9, 9, 11, 12, 15
Mean = (4 + 5 + 7 + 9 + 9 + 11 + 12 + 15) / 8 = 9
Median = 9+9/2 = 18/2 = 9
Mode = 9
Range = 15 - 4 = 11
Therefore, the true statement are:
D. The mode is greater than 7.
Need answers ASAP please and Thankyou!
Answer:
A = 65deg
B = 78deg
Step-by-step explanation:
It's a triangle, so we know that the sum of angles is 180deg
x + (2x - 9) + (2x + 4) = 180
5x - 5 = 180
5x = 185
x = 37
Measure of angle A = (2*37 - 9)deg = 65deg
Measure of angle B = (2*37 + 4)deg = 78deg
How do I find what 7x-3y=29 7x-6y=23 is?
Answer:
You graph each equation, then you find the intercepting point. the location of that point is the answer. You can also do it in equation form.
What is the example of ratio?
Answer:
Step-by-step explanation:
f there are eight oranges and six lemons in a bowl of fruit, then the ratio of oranges to lemons is eight to six (that is, 8∶6, which is equivalent to the ratio 4∶3). Similarly, the ratio of lemons to oranges is 6∶8 (or 3∶4) and the ratio of oranges to the total amount of fruit is 8∶14
!!!!Please help me answer these ASAP!! EXTRA POINTS!!!!!!!WILL MARK BRAINLIEST!!!!!
1) Which of the following is a zero of 8x2+38x+35?
A) -5/4
B) 7/2
3) Which of the following zeros of the following quadratic function x2+14x+49?
A)-7
B)14
Answer:
1) A
3) A
Step-by-step explanation:
Solve using factoring or quadratic formula.
I dont get this question, if u could explain it ill appreciate it
thanks
Answer:
D) is the correct answer
Step-by-step explanation:
To define a function, so one x can only corresponding to one y.
Then for A) we have x = -5, but y can be 1 and 4, so it is to a function,
for B) x =1, y = -1 or -4, so not. For C) x =0, y = -3 or 0, so wrong. Then left with D) which each x only corresponding to one y, so D) is correct.
If it is helpful, plz give me Brainliest.
Round to the nearest 10th
Kayla has 562 cookies. Her friend comes by and eats 37 of them. What does this mean?
Answer:
Step-by-step explanation:
it means that her friend ate 37 cookies from the 561 cookies that kayla had before she ate them
Answer:
it means That Kayla is about to catch a body
Step-by-step explanation:
For the function whose graph is shown, which is the correct formula for the function?
A. y = |x| – 1
B. y = |x – 1|
C. y = |x| + 1
D. y = |x + 1|
What’s the expression of this help!
Answer:
27
Step-by-step explanation:
3^2=9
2^3=8
9×8=72
9×4=36
72+36=108
108÷2^2
2^2=4
108÷4=27
hoped this helped you!
Look at screenshot for question
Find the area of this triangle. Round to the nearest tenth
Answer: 108.83 yd²
Step-by-step explanation:
First find height.
Use trigonometric ratios:
sin85 = h/9.5
h = 9.5sin85 = 9.46 yd
Use the following formula:
A = [tex]\frac{1}{2}[/tex]bh
A = [tex]\frac{1}{2}[/tex] (23)(9.46)
A = 108.83 yd²
Camile shaded 18/30 of a model write the decimal that represents the unshaded portion of the model
Answer:
.4
Step-by-step explanation:
Camile shaded 18/30 of a model.
Thus the unshaded portion of the model is:
30 - 18 = 12
12/30
12/30 = 0.4