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Lisa [10]
2 years ago
5

Question 7

Mathematics
1 answer:
Deffense [45]2 years ago
8 0

Q7.

The domain of the function y = sin x - 2 is x ≥ 2.

Answer: FALSE because is All Real Numbers

Q8.

The domain of the function y = cos x + 1 is All Real Numbers.

Answer: TRUE

Q9.

What's the domain of the function y = sin x?

Answer: All Real Numbers

Q10.

What is the range of the function y = sin x?

Answer: -1 ≤ y ≤ 1

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The ratio of boys to girl in a school is 5:7 if there are 600 students, how many girls are there
larisa86 [58]

Answer:

350 girls

Step-by-step explanation:

So,

The secret to solving problems with ratios is to find the value of one unit.

5:7 = 12 units total

To find one unit, divide the total number of students by the total number of units.

600/12 = a

Simplify

50/1 = a

50 = a

The value of each unit is 50.

Now, multiply the units by the numbers in the ratio.

50(5) = b

250 = boys

50(7) = x

350 = x

There are 350 girls.

3 0
2 years ago
Please Identify the congruent triangles in the figure.
Tpy6a [65]

The missing steps are each right angles and \angle R \cong \angle O.

Solution:

Step 1: Given data:

\overline {P Q} \cong \overline{M N}

\overline{Q R} \cong \overline{N O}

\overline{P R} \cong \overline{M O}

Step 2: In the two polygons,

\angle Q =90^\circ and \angle N =90^\circ

\angle Q \cong \angle N (Each right angle)

Step 3: Given

\angle P \cong \angle M

Step 4: By third angle theorem,

If two angles in one triangle are congruent to the two angles in the other triangle, then the third angles in the triangles also congruent.

\angle R \cong \angle O

Step 5: By the definition of congruent polygons,

If two same shape polygons have all the angles are congruent and all the corresponding sides are congruent then the polygons are congruent.

Hence \Delta P Q R \cong \Delta M N O.

Therefore the missing steps are each right angles and \angle R \cong \angle O.

5 0
3 years ago
From the yearbook receipts the students council deposited apart of the $1200 in a saving account receiving 9% interest per annum
Naddika [18.5K]
There was $800 deposited at 9% interest and $400 deposited at 4% interest.

The formula for simple interest is I = prt.  Using our information we have:

88 = x(0.09)(1) + (1200-x)(0.04)(1)
88 = 0.09x + 48 - 0.04x
88 = 0.05x + 48

Subtract 48 from both sides:
88 - 48 = 0.05x + 48 - 48
40 = 0.05x

Divide both sides by 0.05:
40/0.05 = 0.05x/0.05
x = 800
1200 - x = 400
8 0
3 years ago
Pleas help hellllllllllllllllllp meeeeeeeeeeeeeeee I will mark you brainlist
elena55 [62]

Answer:

500 square units

Step-by-step explanation:

I am pretty sure I am correct

3 0
3 years ago
HELPP will give Brainlyest answer!!!
nika2105 [10]

Answer:

Step-by-step explanation:

here you go!!

3 0
2 years ago
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