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2 years ago

Are the two expressions in the equation 2b + 5 + 1b = 3b + 5 equal or equivalent? How do you know?

Mathematics

2 answers:

irga5000 [103]2 years ago

8 0

Answer:

the equation are equivalent

Step-by-step explanation:

to know why, look at the pic above

hodyreva [135]2 years ago

4 0

Answer:

they are equal because while solving 2b+5+1b it will come 3b+5 so they are equal

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you invested $800 for 2 years at an interest rate of 4.5%. What was the interest earned on your investment?

Korolek [52]

Answer:

$72

Step-by-step explanation:

Interest = Principal(Rate)(Time)/100

Interest = $800(2)(4.5)/100

Interest = 7200/100

Interest = $72 (Answer)

8 0

2 years ago

What is -1 and 3/5 divided by -2/3? As a fraction.

Dennis_Churaev [7]

Answer=

mixed form=2 2/5

decimal form=2.4

exact form= 12/5

8 0

2 years ago

6) Two coastguard stations P and Q are 17km apart, with due East of P. A ship S is observed in distress on a bearing 048° fromP

adelina 88 [10]

Answer:

The ship S is at 10.05 km to coastguard P, and 12.70 km to coastguard Q.

Step-by-step explanation:

Let the distance of the ship to coastguard P be represented by x, and its distance to coastguard Q be represented by y.

But,

<P = 048°

<Q = $360^{o}$ - $324^{o}$

= 0 $36^{o}$

Sum of angles in a triangle = $180^{o}$

<P + <Q + <S = $180^{o}$

048° + 0 $36^{o}$ + <S = $180^{o}$

$84^{o}$ + <S = $180^{o}$

<S = $180^{o}$ - $84^{o}$

= $96^{o}$

<S = $96^{o}$

Applying the Sine rule,

$\frac{y}{Sin P}$ = $\frac{x}{Sin Q}$ = $\frac{z}{Sin S}$

$\frac{y}{Sin P}$ = $\frac{z}{Sin S}$

$\frac{y}{Sin 48^{o} }$ = $\frac{17}{Sin 96^{o} }$

$\frac{y}{0.74314}$ = $\frac{17}{0.99452}$

⇒ y = $\frac{12.63338}{0.99452}$

= 12.703

y = 12.70 km

$\frac{x}{Sin Q}$ = $\frac{z}{Sin S}$

$\frac{x}{Sin 36^{o} }$ = $\frac{17}{Sin 96^{o} }$

$\frac{x}{0.58779}$ = $\frac{17}{0.99452}$

⇒ x = $\frac{9.992430}{0.99452}$

= 10.0475

x = 10.05 km

Thus,

the ship S is at a distance of 10.05 km to coastguard P, and 12.70 km to coastguard Q.

6 0

2 years ago

A toaster has four slots for bread. Once the toaster is warmed up, it takes 35 seconds to make 4 slices of toast, 70 seconds to

soldier1979 [14.2K]

Answer:

192.5

Step-by-step explanation:

You are adding 35 sec to every 4 pieces of bread once you get to 20 you divide 35 and get 17.5 so the answer id 192.5

6 0

2 years ago

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patriot [66]

I think You should break it down to the First and third One because of

7 0

2 years ago