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KatRina [158]
2 years ago
12

Help help help help help help

Mathematics
1 answer:
Advocard [28]2 years ago
4 0

Answer:

Congruent angles and proportional side lengths

Step-by-step explanation:

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Is circle Tangent lines
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no because it is not a right angled triangle.

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Find the L.C.M. of: a2 + 2a +1, a? + 3a + 2​
MArishka [77]

Step-by-step explanation:

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2 years ago
If you wish to warm 40 kg of water by 18 ∘C for your bath, find what the quantity of heat is needed. Express your answer in calo
Harman [31]

Answer:

Quantity of heat needed (Q) = 722.753 × 10³

Step-by-step explanation:

According to question,

Mass of water (m) = 40 kg

Change in temperature ( ΔT) = 18°c

specific heat capacity of water = 4200 j kg^-1 k^-1

The specific heat capacity is the amount of heat required to change the temperature of 1 kg of substance to 1 degree celcius or 1 kelvin .

So, Heat (Q) = m×s×ΔT

Or,          Q = 40 kg × 4200 × 18

or,           Q = 3024 × 10³ joule

Hence, Quantity of heat needed (Q) = 3024 × 10³ joule    

In calories 4.184 joule = 1 calorie

So, 3024 × 10³ joule = 722.753 × 10³

6 0
3 years ago
Let ∠Q be an acute angle such that tanQ=0.04. Use a calculator to approximate the measure of ∠Q to the nearest tenth of a degree
Digiron [165]

We have been given that ∠Q is an acute angle such that \text{tan}(Q)=0.04. We are asked to find the measure of angle Q to nearest tenth of a degree.

We will use arctan to solve for measure of angle Q as:

Q=\text{tan}^{-1}(0.04)

Now we will use calculator to solve for Q as:

Q=2.290610042639^{\circ}

Upon rounding to nearest tenth of degree, we will get:

Q=2.3^{\circ}

Therefore, measure of angle Q is approximately 2.3 degrees.

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2 years ago
What are the coordinates of D' after its preimage, D(4, -8), is reflected over the line y = x?
olya-2409 [2.1K]

Answer: D' is (-8,4)

Step-by-step explanation: The rule for reflection y=x is (x,y)>( y,x) So when  relecting over the axis y=x the x cordinate and the y cordinate switch places.

6 0
2 years ago
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