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3 years ago

Is the answer right?

Mathematics

2 answers:

notsponge [240]3 years ago

8 0

Answer:

one solution.. your answer is correct

Step-by-step explanation:

discriminate = 900 - (4*9*25) = 0

thus only one solution

maria [59]3 years ago

7 0

Your answer is correct

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A caterer makes 3 extra sandwhiches for every 20 sandwhiches a customer orders. What is the ratio of ordered sandwiches to extra

VMariaS [17]

You can solve this by making a proportion.

$\frac{3}{20} = \frac{x}{184}$

you cross multiply and divide to solve this. your answer is 8.

4 0

3 years ago

William says that 15years from now his age will be 3 times his age 5 years ago if x represents williams present age complete the

Kay [80]

Answer:

Is the question complete

5 0

2 years ago

8. Given: PQR and TSR are right triangles,

rewona [7]

Answer:

The answer is below

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. Types of triangles are scalene, right angled, isosceles, equilateral.

A right angled triangle is a triangle with one angle equals to 90°.

Statement Reason

∠PQR = ∠RST Given. ∠PQR = ∠RST = 90° (definition for right

angle triangle.

PQ = ST Given

PR ≅ RT Since R is the midpoint of PT, hence PR = RT

ΔPQR ≅ ΔTSR Side-angle-side triangle congruence theorem.

the Side-angle-side triangle congruence theorem

states that if two sides and an included angle of

one triangle is equal to two sides and an included

angle of another triangle, then the two triangles

are congruent. PQ=ST, PR = RT and ∠PQR = ∠TSR

3 0

2 years ago

Factorize x^2+3x-ax-3a

Kobotan [32]

Answer:

=−ax+x2−3a+3x

Step-by-step explanation:

3 0

3 years ago

Convert 80 km per hour and 120 km per hour to meters per second

Burka [1]

hi brainly user! ૮₍ ˃ ⤙ ˂ ₎ა

⊱┈────────────────────────┈⊰

$\large \bold {ANSWER}$

$\large \boxed { \large \sf \green{ 80 km/h = 22.22 m/s }}$
$\large \boxed { \large \sf \green{ 120 km/h = 33.33 m/s }}$

$\large \bold {SOLUTION}$

The first thing we must do is convert kilometers to meters. We will do this by multiplying by 1,000, since 1 km corresponds to 1,000 meters.

80*1000 = 80,000
120*1000 = 120,000

Now that we've done that, let's divide the values by 3,600, because an hour is 60 minutes, and each minute is 60 seconds, so 60*60 is 3,600.

$\frac{80.0\not0\not0}{3.6\not0\not0}=22.22$

$\frac{120.0\not0\not0}{3.6\not0\not0}=33.33$

Hence, 80 km/h = 22.22 m/s, 120 km/h = 33.33 m/s

8 0

2 years ago

Read 2 more answers