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4 years ago

What is the value of y ??

Mathematics

2 answers:

ratelena [41]4 years ago

8 0

A is the correct one

AlexFokin [52]4 years ago

7 0

Your answer would be A. 40°.

We can find this by using the rule that angles in a triangle add up to 180°, so then writing an equation including all expressions in the triangle:

2y + y + 10 + 50 = 180

3y + 60 = 180

- 60

3y = 120

÷ 3

y = 40

I hope this helps!

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Darius took a road trip to their grandmother's house. They drove at a constant speed of 60 miles per hour for 2 hours. They took

Reptile [31]

Answer: 220 miles

Step-by-step explanation:

Distance travelled is calculated as:

= Speed × Time

Based on the scenario on the question, the total distance, in miles, of Darius' trip will be:

= (60 × 2) + (50 × 2)

= 120 + 100

= 220 miles

5 0

3 years ago

On Kathleen's credit card statement get last balance was $89.70. She made a payment of $20, had new charges totaling $32.11, and

Leona [35]

Hi there

Amount financed
89.70−20=69.7

Finance charge
69.7×(0.0123)=0.86

New balance
Previous balance-payment+finance charge+New charge (new transaction)
89.7−20+0.86+32.11
=102.67

Hope it helps

5 0

3 years ago

For each of the following functions, determine if they are injective. Also determine if theyare surjective. Also determine if th

timurjin [86]

Answer:

Check below

Step-by-step explanation:

1. Definition for intervals

$(a,b)=\left \{ x\in\Re : a$

2. Functions

1) $\Re \rightarrow \Re \\ f(x)=x$

Let's perform graph tests.

That's an one to one, injective function. Look how any horizontal line touches that only once. Also, It's a surjective and a bijective one.

2) $\Re\geq0\rightarrow\Re , f(x)=x+1\\$

Injective, surjective and bijective.

Injective: a horizontal line crosses the graph in one point.

3) $f:\Re\geq 0\rightarrow\Re, f(x) = cos(x)$

The cosine function is not injective, bijective nor surjective.

4) $f:\Re\rightarrow\Re \:f(x)=ex$

Since e, is euler number it's a constant. It's also injective, surjective and bijective.

5) Quite unclear format

$6) \:f:\Re\rightarrow(0,\infty), f(x) =ex$

Despite the Restriction for the CoDomain, the function remains injective, surjective and therefore bijective.

$7) f:\Re\geq 0 \rightarrow \Re\geq0, f(x) =x^{4}$

Not injective nor surjective therefore not bijective too.

$8).f:\{-1,2,-3\}}\rightarrow \{1,4,9\}, f(x) =x^{2}$

$f(-1)=1, f(2)=4, f(-3)=9$

Injective (one to one), Surjective, and Bijective.

$10) f:\Re\geq 0\rightarrow [-1,1], f(x)= cos(x)\\-1=cos(x) \therefore x=\pi,3\pi,5\pi,etc.$

Surjective.

$11.f:R\geq 0[-1,1], f(x) = 0\\$

Surjective

12.f: US Citizens→Z, f(x) = the SSN of x.

General function

13.f: US Zip Codes→US States, f(x) = The state that x belongs to.

Surjective

7 0

3 years ago

4x – 7y + 3z - 10<br><br> What's the coefficient of the 2nd term?

Illusion [34]

That would be 7 because it is placed in front of the y

6 0

4 years ago

Tossing 2 fair coins and both landing heads up what would be the fraction for that

Anon25 [30]

The chance of One heads occurring is 1/2.
The chance of the second occurring separately is 1/2 as well. Joint together, it is 1/2x1/2: which is 1/4.

So your answer is 1/4 chance

I hope this Helps!

5 0

3 years ago

Read 2 more answers