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Mice21 [21]
3 years ago
15

Gretchen withdrew $31.45 from the bank to buy groceries. Then she deposited a check for $27.89 in the bank. Which expression rep

resents the net change in her account balance as a result of these two transactions? What is the net change in her account balance?
Mathematics
2 answers:
postnew [5]3 years ago
6 0

Answer:

The net change is -$3.56.

Step-by-step explanation:

You do -31.45-27.89=-$3.56

Shtirlitz [24]3 years ago
4 0
It would be -31.45 + 27.89
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3 + 10.8 is:<br> rational<br> irrational<br> Idk what this is if u could please help me
ratelena [41]

Answer:

3 + 10.8 is : rational.

Step-by-step explanation:

the reason for this is because it is neither a variable, pi, or numbers like square root 2.

4 0
3 years ago
Find the probability that a data value picked at random from a normally distributed population will have a standard score that c
DerKrebs [107]
P(z < 3)
From the normal distribution table,
P(z < 3) = 0.9987
8 0
3 years ago
Do alto de um farol cuja altura é de 20 m avista se um navio sob ângulo de depressão de 30°. A que distância , aproximadamente,
Mkey [24]
Esta é a trigonometria . Se você desenhar uma linha a partir do topo da casa de luz para o barco, você terá a hypotonuse de um triângulo. Um truque é lembrar que este é um triângulo especial. É um triângulo 30-60-90 , que tem propriedades especiais mostradas na fixação abaixo . por isso sabemos que o lado adjacente que não é o hyposonuse é x√3 . Agora sabemos que x<span>√3 = 20
Solve for x.
x</span><span>√3=20
divide both sides by </span><span>√3.
x=20/(</span><span><span>√3)
</span>Try not to have square roots (</span><span><span>√)</span> in denomenator so multiply top and bottom by </span><span>√3 and get
x=(20</span><span>√3)/3
x is what we are looking for so the answer is </span>
20<span>√3 m </span><span>ou cerca de 34.64 m</span>










7 0
3 years ago
Help 16-18 thank you
saw5 [17]

Answer:

16. (80)(60) = 4800

17. (500)(600) = 300000

18. (700)(800) = 560000  a). high

Step-by-step explanation:

5 0
3 years ago
Please help! thanks :)
Evgen [1.6K]
If you times 39.99 by 0.20 (20%) then you get your answer of $7.99
4 0
2 years ago
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